Page 1 : 1. HTML – OVERVIEW, , HTML, , HTML stands for Hypertext Markup Language, and it is the most widely used language to, write Web Pages., , , Hypertext refers to the way in which Web pages (HTML documents) are linked, together. Thus, the link available on a webpage is called Hypertext., , , , As its name suggests, HTML is a Markup Language which means you use HTML to, simply "mark-up" a text document with tags that tell a Web browser how to structure, it to display., , Originally, HTML was developed with the intent of defining the structure of documents like, headings, paragraphs, lists, and so forth to facilitate the sharing of scientific information, between researchers., Now, HTML is being widely used to format web pages with the help of different tags available, in HTML language., , Basic HTML Document, In its simplest form, following is an example of an HTML document:, <!DOCTYPE html>, <html>, <head>, <title>This is document title</title>, </head>, <body>, <h1>This is a heading</h1>, <p>Document content goes here.....</p>, </body>, </html>, Either you can use Try it option available at the top right corner of the code box to check the, result of this HTML code, or let's save it in an HTML file test.htm using your favorite text, editor. Finally open it using a web browser like Internet Explorer or Google Chrome, or Firefox, etc. It must show the following output:, , 16
Page 2 : HTML, , HTML Tags, As told earlier, HTML is a markup language and makes use of various tags to format the, content. These tags are enclosed within angle braces <Tag Name>. Except few tags, most, of the tags have their corresponding closing tags. For example, <html> has its closing, tag</html> and <body> tag has its closing tag </body> tag etc., Above example of HTML document uses the following tags:, Tag, , Description, , <!DOCTYPE...>, , This tag defines the document type and HTML version., , <html>, , This tag encloses the complete HTML document and mainly comprises, of document header which is represented by <head>...</head> and, document body which is represented by <body>...</body> tags., , <head>, , This tag represents the document's header which can keep other HTML, tags like <title>, <link> etc., , <title>, , The <title> tag is used inside the <head> tag to mention the, document title., , <body>, , This tag represents the document's body which keeps other HTML tags, like <h1>, <div>, <p> etc., , <h1>, , This tag represents the heading., , 17
Page 3 : HTML, , <p>, , This tag represents a paragraph., , To learn HTML, you will need to study various tags and understand how they behave, while, formatting a textual document. Learning HTML is simple as users have to learn the usage of, different tags in order to format the text or images to make a beautiful webpage., World Wide Web Consortium (W3C) recommends to use lowercase tags starting from HTML, 4., , HTML Document Structure, A typical HTML document will have the following structure:, Document declaration tag, <html>, <head>, Document header related tags, </head>, , <body>, Document body related tags, </body>, </html>, We will study all the header and body tags in subsequent chapters, but for now let's see what, is document declaration tag., , The <!DOCTYPE> Declaration, The <!DOCTYPE> declaration tag is used by the web browser to understand the version of, the HTML used in the document. Current version of HTML is 5 and it makes use of the following, declaration:, <!DOCTYPE html>, There are many other declaration types which can be used in HTML document depending on, what version of HTML is being used. We will see more details on this while discussing, <!DOCTYPE...> tag along with other HTML tags., , 18
Page 5 : HTML, , Paragraph Tag, The <p> tag offers a way to structure your text into different paragraphs. Each paragraph of, text should go in between an opening <p> and a closing </p> tag as shown below in the, example:, , Example, <!DOCTYPE html>, <html>, <head>, <title>Paragraph Example</title>, </head>, <body>, <p>Here is a first paragraph of text.</p>, <p>Here is a second paragraph of text.</p>, <p>Here is a third paragraph of text.</p>, </body>, </html>, This will produce the following result:, Here is a first paragraph of text., Here is a second paragraph of text., Here is a third paragraph of text., 20
Page 6 : HTML, , Line Break Tag, Whenever you use the <br /> element, anything following it starts from the next line. This, tag is an example of an empty element, where you do not need opening and closing tags, as, there is nothing to go in between them., The <br /> tag has a space between the characters br and the forward slash. If you omit this, space, older browsers will have trouble rendering the line break, while if you miss the forward, slash character and just use <br> it is not valid in XHTML., , Example, <!DOCTYPE html>, <html>, <head>, <title>Line Break, , Example</title>, , </head>, <body>, <p>Hello<br />, You delivered your assignment on time.<br />, Thanks<br />, Mahnaz</p>, </body>, </html>, This will produce the following result:, Hello, You delivered your assignment on time., Thanks, Mahnaz, , Centering Content, You can use <center> tag to put any content in the center of the page or any table cell., , Example, <!DOCTYPE html>, <html>, <head>, 21
Page 7 : HTML, , <title>Centring Content Example</title>, </head>, <body>, <p>This text is not in the center.</p>, <center>, <p>This text is in the center.</p>, </center>, </body>, </html>, This will produce the following result:, , This text is not in the center., This text is in the center., , Horizontal Lines, Horizontal lines are used to visually break-up sections of a document. The <hr> tag creates, a line from the current position in the document to the right margin and breaks the line, accordingly., For example, you may want to give a line between two paragraphs as in the given example, below:, , Example, <!DOCTYPE html>, <html>, <head>, <title>Horizontal Line Example</title>, </head>, <body>, <p>This is paragraph one and should be on top</p>, <hr />, <p>This is paragraph two and should be at bottom</p>, </body>, </html>, 22
Page 8 : HTML, This will produce the following result:, , This is paragraph one and should be on top, This is paragraph two and should be at bottom, , Again <hr /> tag is an example of the empty element, where you do not need opening and, closing tags, as there is nothing to go in between them., The <hr /> element has a space between the characters hr and the forward slash. If you, omit this space, older browsers will have trouble rendering the horizontal line, while if you, miss the forward slash character and just use <hr> it is not valid in XHTML, , Preserve Formatting, Sometimes, you want your text to follow the exact format of how it is written in the HTML, document. In these cases, you can use the preformatted tag <pre>., Any text between the opening <pre> tag and the closing </pre> tag will preserve the, formatting of the source document., , Example, <!DOCTYPE html>, <html>, <head>, <title>Preserve Formatting Example</title>, </head>, <body>, <pre>, function testFunction( strText ){, alert (strText), }, </pre>, </body>, </html>, This will produce the following result:, function testFunction( strText ){, 23
Page 9 : HTML, alert (strText), }, , Try using the same code without keeping it inside <pre>...</pre> tags, , Nonbreaking Spaces, Suppose you want to use the phrase "12 Angry Men." Here, you would not want a browser to, split the "12, Angry" and "Men" across two lines:, An example of this technique appears in the movie "12 Angry Men.", In cases, where you do not want the client browser to break text, you should use a, nonbreaking space entity instead of a normal space. For example, when coding the, "12 Angry Men" in a paragraph, you should use something similar to the following code:, , Example, <!DOCTYPE html>, <html>, <head>, <title>Nonbreaking Spaces Example</title>, </head>, <body>, <p>An example of this technique appears in the movie "12 Angry Men."</p>, </body>, </html>, , 24
Page 10 : 3. HTML – ELEMENTS, , HTML, , An HTML element is defined by a starting tag. If the element contains other content, it ends, with a closing tag, where the element name is preceded by a forward slash as shown below, with few tags:, Start Tag, , Content, , End Tag, , <p>, , This is paragraph content., , </p>, , <h1>, , This is heading content., , </h1>, , <div>, , This is division content., , </div>, , <br />, , So here <p>....</p> is an HTML element, <h1>...</h1> is another HTML element. There, are some HTML elements which don't need to be closed, such as <img.../>, <hr /> and, <br /> elements. These are known as void elements., HTML documents consists of a tree of these elements and they specify how HTML documents, should be built, and what kind of content should be placed in what part of an HTML document., , HTML Tag vs. Element, An HTML element is defined by a starting tag. If the element contains other content, it ends, with a closing tag., For example, <p> is starting tag of a paragraph and </p> is closing tag of the same, paragraph but <p>This is paragraph</p> is a paragraph element., , Nested HTML Elements, It is very much allowed to keep one HTML element inside another HTML element:, , Example, <!DOCTYPE html>, <html>, 25
Page 11 : HTML, , <head>, , <title>Nested Elements Example</title>, </head>, <body>, <h1>This is <i>italic</i> heading</h1>, <p>This is <u>underlined</u> paragraph</p>, </body>, </html>, This will display the following result:, , This is italic heading, , This is underlined paragraph, , 26
Page 12 : 4. HTML – ATTRIBUTES, , HTML, , We have seen few HTML tags and their usage like heading tags <h1>, <h2>, paragraph tag, <p> and other tags. We used them so far in their simplest form, but most of the HTML tags, can also have attributes, which are extra bits of information., An attribute is used to define the characteristics of an HTML element and is placed inside the, element's opening tag. All attributes are made up of two parts: a name and a value:, , , , , , The name is the property you want to set. For example, the paragraph <p> element, in the example carries an attribute whose name is align, which you can use to indicate, the alignment of paragraph on the page., The value is what you want the value of the property to be set and always put within, quotations. The below example shows three possible values of align attribute: left,, center and right., , Attribute names and attribute values are case-insensitive. However, the World Wide Web, Consortium (W3C) recommends lowercase attributes/attribute values in their HTML 4, recommendation., , Example, <!DOCTYPE html>, <html>, <head>, <title>Align Attribute, , Example</title>, , </head>, <body>, <p align="left">This is left aligned</p>, <p align="center">This is center aligned</p>, <p align="right">This is right aligned</p>, </body>, </html>, This will display the following result:, This is left aligned, This is center aligned, 27
Page 13 : HTML, , This is right aligned, , Core Attributes, The four core attributes that can be used on the majority of HTML elements (although not all), are:, , , , , , Id, Title, Class, Style, , The Id Attribute, The id attribute of an HTML tag can be used to uniquely identify any element within an HTML, page. There are two primary reasons that you might want to use an id attribute on an, element:, , , If an element carries an id attribute as a unique identifier, it is possible to identify just, that element and its content., , , , If you have two elements of the same name within a Web page (or style sheet), you, can use the id attribute to distinguish between elements that have the same name., , We will discuss style sheet in separate tutorial. For now, let's use the id attribute to distinguish, between two paragraph elements as shown below., , Example, <p id="html">This para explains what is HTML</p>, <p id="css">This para explains what is Cascading Style Sheet</p>, , The title Attribute, The title attribute gives a suggested title for the element. They syntax for the title attribute, is similar as explained for id attribute:, The behavior of this attribute will depend upon the element that carries it, although it is often, displayed as a tooltip when cursor comes over the element or while the element is loading., , Example, <!DOCTYPE html>, <html>, <head>, 28
Page 14 : HTML, , <title>The title Attribute Example</title>, </head>, <body>, <h3 title="Hello HTML!">Titled Heading Tag Example</h3>, </body>, </html>, This will produce the following result:, , Titled Heading Tag Example, Now try to bring your cursor over "Titled Heading Tag Example" and you will see that whatever, title you used in your code is coming out as a tooltip of the cursor., , The class Attribute, The class attribute is used to associate an element with a style sheet, and specifies the class, of element. You will learn more about the use of the class attribute when you will learn, Cascading Style Sheet (CSS). So for now you can avoid it., The value of the attribute may also be a space-separated list of class names. For example:, class="className1 className2 className3", , The style Attribute, The style attribute allows you to specify Cascading Style Sheet (CSS) rules within the element., <!DOCTYPE html>, <html>, <head>, <title>The style Attribute</title>, </head>, <body>, <p style="font-family:arial; color:#FF0000;">Some text...</p>, </body>, </html>, This will produce the following result:, , 29
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HTML, , Some text..., At this point of time, we are not learning CSS, so just let's proceed without bothering much, about CSS. Here, you need to understand what are HTML attributes and how they can be, used while formatting content., , Internationalization Attributes, There are three internationalization attributes, which are available for most (although not all), XHTML elements., , , , , dir, lang, xml:lang, , The dir Attribute, The dir attribute allows you to indicate to the browser about the direction in which the text, should flow. The dir attribute can take one of two values, as you can see in the table that, follows:, Value, , Meaning, , ltr, , Left to right (the default value), , rtl, , Right to left (for languages such as Hebrew or Arabic that are read right to left), , Example, <!DOCTYPE html>, <html dir="rtl">, <head>, <title>Display Directions</title>, </head>, <body>, This is how IE 5 renders right-to-left directed text., </body>, </html>, This will produce the following result:, 30
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HTML, , This is how IE 5 renders right-to-left directed text., When dir attribute is used within the <html> tag, it determines how text will be presented, within the entire document. When used within another tag, it controls the text's direction for, just the content of that tag., , The lang Attribute, The lang attribute allows you to indicate the main language used in a document, but this, attribute was kept in HTML only for backwards compatibility with earlier versions of HTML., This attribute has been replaced by the xml:lang attribute in new XHTML documents., The values of the lang attribute are ISO-639 standard two-character language codes. Check, HTML Language Codes: ISO 639 for a complete list of language codes., , Example, <!DOCTYPE html>, <html lang="en">, <head>, <title>English Language Page</title>, </head>, <body>, This page is using English Language, </body>, </html>, , The xml:lang Attribute, The xml:lang attribute is the XHTML replacement for the lang attribute. The value of, thexml:lang attribute should be an ISO-639 country code as mentioned in previous section., , Generic Attributes, Here's a table of some other attributes that are readily usable with many of the HTML tags., Attribute, align, , Options, right, left, center, , Function, Horizontally aligns tags, 31
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HTML, , valign, , top, middle, bottom, , Vertically, element., , aligns, , bgcolor, , numeric, hexidecimal, RGB, values, , Places a, element, , background, , background, , URL, , Places a background image behind an, element, , id, , User Defined, , Names an element for use with Cascading, Style Sheets., , class, , User Defined, , Classifies an element for use with Cascading, Style Sheets., , width, , Numeric Value, , Specifies the width of tables, images, or, table cells., , height, , Numeric Value, , Specifies the height of tables, images, or, table cells., , title, , User Defined, , "Pop-up" title of the elements., , tags, , within, , color, , an, , HTML, , behind, , an, , We will see related examples as we will proceed to study other HTML tags. For a complete list, of HTML Tags and related attributes please check reference to HTML Tags List., , 32
Page 18 : 5. HTML – FORMATTING, , HTML, , If you use a word processor, you must be familiar with the ability to make text bold, italicized,, or underlined; these are just three of the ten options available to indicate how text can appear, in HTML and XHTML., , Bold Text, Anything that appears within <b>...</b> element, is displayed in bold as shown below:, , Example, <!DOCTYPE html>, <html>, <head>, <title>Bold Text Example</title>, </head>, <body>, <p>The following word uses a <b>bold</b> typeface.</p>, </body>, </html>, This will produce the following result:, The following word uses a bold typeface., , Italic Text, Anything that appears within <i>...</i> element is displayed in italicized as shown below:, , Example, <!DOCTYPE html>, <html>, <head>, <title>Italic Text Example</title>, </head>, 33
Page 19 : HTML, , <body>, <p>The following word uses a <i>italicized</i> typeface.</p>, </body>, </html>, This will produce the following result:, The following word uses an italicized typeface., , Underlined Text, Anything that appears within <u>...</u> element, is displayed with underline as shown, below:, , Example, <!DOCTYPE html>, <html>, <head>, <title>Underlined Text Example</title>, </head>, <body>, <p>The following word uses a <u>underlined</u> typeface.</p>, </body>, </html>, This will produce the following result:, , The following word uses an underlined typeface., , Strike Text, Anything that appears within <strike>...</strike> element is displayed with strikethrough,, which is a thin line through the text as shown below:, , Example, <!DOCTYPE html>, <html>, <head>, 34
Page 20 : HTML, , <title>Strike Text Example</title>, </head>, <body>, <p>The following word uses a <strike>strikethrough</strike> typeface.</p>, </body>, </html>, , This will produce the following result:, The following word uses a strikethrough typeface., , Monospaced Font, The content of a <tt>...</tt> element is written in monospaced font. Most of the fonts are, known as variable-width fonts because different letters are of different widths (for example,, the letter 'm' is wider than the letter 'i'). In a monospaced font, however, each letter has the, same width., , Example, <!DOCTYPE html>, <html>, <head>, <title>Monospaced Font Example</title>, </head>, <body>, <p>The following word uses a <tt>monospaced</tt> typeface.</p>, </body>, </html>, This will produce the following result:, The following word uses a monospaced typeface., , Superscript Text, The content of a <sup>...</sup> element is written in superscript; the font size used is the, same size as the characters surrounding it but is displayed half a character's height above, the other characters., 35
Page 21 : HTML, , Example, <!DOCTYPE html>, <html>, <head>, <title>Superscript Text Example</title>, </head>, <body>, <p>The following word uses a <sup>superscript</sup> typeface.</p>, </body>, </html>, This will produce the following result:, The following word uses a superscript typeface., , Subscript Text, The content of a <sub>...</sub> element is written in subscript; the font size used is the, same as the characters surrounding it, but is displayed half a character's height beneath the, other characters., , Example, <!DOCTYPE html>, <html>, <head>, <title>Subscript Text Example</title>, </head>, <body>, <p>The following word uses a <sub>subscript</sub> typeface.</p>, </body>, </html>, This will produce the following result:, The following word uses a, , subscript, , typeface., , 36
Page 22 : HTML, , Inserted Text, Anything that appears within <ins>...</ins> element is displayed as inserted text., , Example, <!DOCTYPE html>, <html>, <head>, <title>Inserted Text Example</title>, </head>, <body>, <p>I want to drink <del>cola</del> <ins>wine</ins></p>, </body>, </html>, This will produce the following result:, , Deleted Text, Anything that appears within <del>...</del> element, is displayed as deleted text., , Example, <!DOCTYPE html>, <html>, <head>, <title>Deleted Text Example</title>, </head>, <body>, <p>I want to drink <del>cola</del> <ins>wine</ins></p>, </body>, </html>, This will produce the following result:, , 37
Page 23 : HTML, , Larger Text, The content of the <big>...</big> element is displayed one font size larger than the rest of, the text surrounding it as shown below:, , Example, <!DOCTYPE html>, <html>, <head>, <title>Larger Text Example</title>, </head>, <body>, <p>The following word uses a <big>big</big> typeface.</p>, </body>, </html>, This will produce the following result:, The following word uses a big typeface., , Smaller Text, The content of the <small>...</small> element is displayed one font size smaller than the, rest of the text surrounding it as shown below:, , Example, <!DOCTYPE html>, <html>, <head>, <title>Smaller Text Example</title>, </head>, <body>, <p>The following word uses a <small>small</small> typeface.</p>, </body>, 38
Page 24 : HTML, , </html>, This will produce the following result:, The following word uses a small typeface., , Grouping Content, The <div> and <span> elements allow you to group together several elements to create, sections or subsections of a page., For example, you might want to put all of the footnotes on a page within a <div> element to, indicate that all of the elements within that <div> element relate to the footnotes. You might, then attach a style to this <div> element so that they appear using a special set of style, rules., , Example, <!DOCTYPE html>, <html>, <head>, <title>Div Tag Example</title>, </head>, <body>, <div id="menu" align="middle" >, <a href="/index.htm">HOME</a> |, <a href="/about/contact_us.htm">CONTACT</a> |, <a href="/about/index.htm">ABOUT</a>, </div>, , <div id="content" align="left" bgcolor="white">, <h5>Content Articles</h5>, <p>Actual content goes here.....</p>, </div>, </body>, </html>, This will produce the following result:, 39
Page 25 : HTML, , HOME | CONTACT | ABOUT, , CONTENT ARTICLES, Actual content goes here....., The <span> element, on the other hand, can be used to group inline elements only. So, if, you have a part of a sentence or paragraph which you want to group together, you could use, the <span> element as follows, , Example, <!DOCTYPE html>, <html>, <head>, <title>Span Tag Example</title>, </head>, <body>, <p>This is the example of <span style="color:green">span tag</span> and the <span, style="color:red">div tag</span> alongwith CSS</p>, </body>, </html>, This will produce the following result:, This is the example of span tag and the div tag along with CSS, These tags are commonly used with CSS to allow you to attach a style to a section of a page., , 40
Page 26 : 6. HTML – PHRASE TAGS, , HTML, , The phrase tags have been desicolgned for specific purposes, though they are displayed in a, similar way as other basic tags like <b>, <i>, <pre>, and <tt>, you have seen in previous, chapter. This chapter will take you through all the important phrase tags, so let's start seeing, them one by one., , Emphasized Text, Anything that appears within <em>...</em> element is displayed as emphasized text., , Example, <!DOCTYPE html>, <html>, <head>, <title>Emphasized Text Example</title>, </head>, <body>, <p>The following word uses a <em>emphasized</em> typeface.</p>, </body>, </html>, This will produce the following result:, The following word uses an emphasized typeface., , Marked Text, Anything that appears with-in <mark>...</mark> element, is displayed as marked with, yellow ink., , Example, <!DOCTYPE html>, <html>, <head>, <title>Marked Text Example</title>, 41
Page 27 : HTML, , </head>, <body>, <p>The following word has been <mark>marked</mark> with yellow</p>, </body>, </html>, This will produce the following result:, The following word has been marked with yellow., , Strong Text, Anything that appears within <strong>...</strong> element is displayed as important text., , Example, <!DOCTYPE html>, <html>, <head>, <title>Strong Text Example</title>, </head>, <body>, <p>The following word uses a <strong>strong</strong> typeface.</p>, </body>, </html>, This will produce the following result:, The following word uses a strong typeface., , Text Abbreviation, You can abbreviate a text by putting it inside opening <abbr> and closing </abbr> tags. If, present, the title attribute must contain this full description and nothing else., , Example, <!DOCTYPE html>, <html>, <head>, 42
Page 28 : HTML, , <title>Text Abbreviation</title>, </head>, <body>, <p>My best friend's name is, , <abbr title="Abhishek">Abhy</abbr>.</p>, , </body>, </html>, This will produce the following result:, My best friend's name is Abhy., , Acronym Element, The <acronym> element allows you to indicate that the text between <acronym> and, </acronym> tags is an acronym., At present, the major browsers do not change the appearance of the content of the, <acronym> element., , Example, <!DOCTYPE html>, <html>, <head>, <title>Acronym Example</title>, </head>, <body>, <p>This chapter covers marking up text in <acronym>XHTML</acronym>.</p>, </body>, </html>, , This will produce the following result:, This chapter covers marking up text in XHTML., , Text Direction, The <bdo>...</bdo> element stands for Bi-Directional Override and it is used to override, the current text direction., , 43
Page 29 : HTML, , Example, <!DOCTYPE html>, <html>, <head>, <title>Text Direction Example</title>, </head>, <body>, <p>This text will go left to right.</p>, <p><bdo dir="rtl">This text will go right to left.</bdo></p>, </body>, </html>, This will produce the following result:, This text will go left to right., This text will go right to left., , Special Terms, The <dfn>...</dfn> element (or HTML Definition Element) allows you to specify that you, are introducing a special term. It's usage is similar to italic words in the midst of a paragraph., Typically, you would use the <dfn> element the first time you introduce a key term. Most, recent browsers render the content of a <dfn> element in an italic font., , Example, <!DOCTYPE html>, <html>, <head>, <title>Special Terms Example</title>, </head>, <body>, <p>The following word is a <dfn>special</dfn> term.</p>, </body>, </html>, This will produce the following result:, 44
Page 30 : HTML, The following word is a special term., , Quoting Text, When you want to quote a passage from another source, you should put it in, between<blockquote>...</blockquote> tags., Text inside a <blockquote> element is usually indented from the left and right edges of the, surrounding text, and sometimes uses an italicized font., , Example, <!DOCTYPE html>, <html>, <head>, <title>Blockquote Example</title>, </head>, <body>, <p>The following description of XHTML is taken from the W3C Web site:</p>, , <blockquote>XHTML 1.0 is the W3C's first Recommendation for XHTML, following on, from earlier work on HTML 4.01, HTML 4.0, HTML 3.2 and HTML 2.0.</blockquote>, </body>, </html>, This will produce the following result:, The following description of XHTML is taken from the W3C Web site:, XHTML 1.0 is the W3C's first Recommendation for XHTML, following on from earlier, work on HTML 4.01, HTML 4.0, HTML 3.2 and HTML 2.0., , Short Quotations, The <q>...</q> element is used when you want to add a double quote within a sentence., , Example, <!DOCTYPE html>, <html>, <head>, 45
Page 31 : HTML, , <title>Double Quote Example</title>, </head>, <body>, <p>Amit is in Spain, <q>I think I am wrong</q>.</p>, </body>, </html>, This will produce the following result:, Amit is in Spain, I think I am wrong., , Text Citations, If you are quoting a text, you can indicate the source placing it between an opening <cite>tag, and closing </cite> tag, As you would expect in a print publication, the content of the <cite> element is rendered in, italicized text by default., , Example, <!DOCTYPE html>, <html>, <head>, <title>Citations Example</title>, </head>, <body>, <p>This HTML tutorial is derived from <cite>W3 Standard for HTML</cite>.</p>, </body>, </html>, This will produce the following result:, , This HTML tutorial is derived from W3 Standard for HTML., , Computer Code, Any, programming, code, to, appear, on, a, Web, page, should, be, placed, inside <code>...</code>tags. Usually the content of the <code> element is presented in a, monospaced font, just like the code in most programming books., , 46
Page 32 : HTML, , Example, <!DOCTYPE html>, <html>, <head>, <title>Computer Code Example</title>, </head>, <body>, <p>Regular text. <code>This is code.</code> Regular text.</p>, </body>, </html>, This will produce the following result:, Regular text. This is code. Regular text., , Keyboard Text, When you are talking about computers, if you want to tell a reader to enter some text, you, can use the <kbd>...</kbd> element to indicate what should be typed in, as in this, example., , Example, <!DOCTYPE html>, <html>, <head>, <title>Keyboard Text Example</title>, </head>, <body>, <p>Regular text. <kbd>This is inside kbd element</kbd> Regular text.</p>, </body>, </html>, This will produce the following result:, Regular text. This is inside kbd element Regular text., , 47
Page 33 : HTML, , Programming Variables, This element is usually used in conjunction with the <pre> and <code> elements to indicate, that the content of that element is a variable., , Example, <!DOCTYPE html>, <html>, <head>, <title>Variable Text Example</title>, </head>, <body>, <p><code>document.write("<var>user-name</var>")</code></p>, </body>, </html>, This will produce the following result:, document.write("user-name"), , Program Output, The <samp>...</samp> element indicates sample output from a program, and script etc., Again, it is mainly used when documenting programming or coding concepts., , Example, <!DOCTYPE html>, <html>, <head>, <title>Program Output Example</title>, </head>, <body>, <p>Result produced by the program is <samp>Hello World!</samp></p>, </body>, </html>, This will produce the following result:, Result produced by the program is Hello World!, 48
Page 34 : HTML, , Address Text, The <address>...</address> element is used to contain any address., , Example, <!DOCTYPE html>, <html>, <head>, <title>Address Example</title>, </head>, <body>, <address>388A, Road No 22, Jubilee Hills -, , Hyderabad</address>, , </body>, </html>, This will produce the following result:, , 388A, Road No 22, Jubilee Hills - Hyderabad, , 49
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7. HTML – META TAGS, , HTML, , HTML lets you specify metadata - additional important information about a document in a, variety of ways. The META elements can be used to include name/value pairs describing, properties of the HTML document, such as author, expiry date, a list of keywords, document, author etc., The <meta> tag is used to provide such additional information. This tag is an empty element, and so does not have a closing tag but it carries information within its attributes., You can include one or more meta tags in your document based on what information you, want to keep in your document but in general, meta tags do not impact physical appearance, of the document so from appearance point of view, it does not matter if you include them or, not., , Adding Meta Tags to Your Documents, You can add metadata to your web pages by placing <meta> tags inside the header of the, document which is represented by <head> and </head> tags. A meta tag can have, following attributes in addition to core attributes:, Attribute, , Description, , Name, , Name for the property. Can be anything. Examples include, keywords,, description, author, revised, generator etc., , content, , Specifies the property's value., , scheme, , Specifies a scheme to interpret the property's value (as declared in the, content attribute)., , httpequiv, , Used for http response message headers. For example, http-equiv can be, used to refresh the page or to set a cookie. Values include content-type,, expires, refresh and set-cookie., , Specifying Keywords, You can use <meta> tag to specify important keywords related to the document and later, these keywords are used by the search engines while indexing your webpage for searching, purpose., 50
Page 36 : HTML, , Example, Following is an example, where we are adding HTML, Meta Tags, Metadata as important, keywords about the document., <!DOCTYPE html>, <html>, <head>, <title>Meta Tags Example</title>, <meta name="keywords" content="HTML, Meta Tags, Metadata" />, </head>, <body>, <p>Hello HTML5!</p>, </body>, </html>, This will produce the following result:, Hello HTML5!, , Document Description, You can use <meta> tag to give a short description about the document. This again can be, used by various search engines while indexing your webpage for searching purpose., , Example, <!DOCTYPE html>, <html>, <head>, <title>Meta Tags Example</title>, <meta name="keywords" content="HTML, Meta Tags, Metadata" />, <meta name="description" content="Learning about Meta Tags." />, </head>, <body>, <p>Hello HTML5!</p>, </body>, </html>, 51
Page 37 : HTML, , Document Revision Date, You can use <meta> tag to give information about when last time the document was updated., This information can be used by various web browsers while refreshing your webpage., , Example, <!DOCTYPE html>, <html>, <head>, <title>Meta Tags Example</title>, <meta name="keywords" content="HTML, Meta Tags, Metadata" />, <meta name="description" content="Learning about Meta Tags." />, <meta name="revised" content="Tutorialspoint, 3/7/2014" />, </head>, <body>, <p>Hello HTML5!</p>, </body>, </html>, , Document Refreshing, A <meta> tag can be used to specify a duration after which your web page will keep refreshing, automatically., , Example, If you want your page keep refreshing after every 5 seconds then use the following syntax., <!DOCTYPE html>, <html>, <head>, <title>Meta Tags Example</title>, <meta name="keywords" content="HTML, Meta Tags, Metadata" />, <meta name="description" content="Learning about Meta Tags." />, <meta name="revised" content="Tutorialspoint, 3/7/2014" />, <meta http-equiv="refresh" content="5" />, 52
Page 38 : HTML, , </head>, <body>, <p>Hello HTML5!</p>, </body>, </html>, , Page Redirection, You can use <meta> tag to redirect your page to any other webpage. You can also specify a, duration if you want to redirect the page after a certain number of seconds., , Example, Following is an example of redirecting current page to another page after 5 seconds. If you, want to redirect page immediately then do not specify content attribute., <!DOCTYPE html>, <html>, <head>, <title>Meta Tags Example</title>, <meta name="keywords" content="HTML, Meta Tags, Metadata" />, <meta name="description" content="Learning about Meta Tags." />, <meta name="revised" content="Tutorialspoint, 3/7/2014" />, <meta http-equiv="refresh" content="5; url=http://www.tutorialspoint.com" />, </head>, <body>, <p>Hello HTML5!</p>, </body>, </html>, , Setting Cookies, Cookies are data, stored in small text files on your computer and it is exchanged between, web browser and web server to keep track of various information based on your web, application need., You can use <meta> tag to store cookies on client side and later this information can be used, by the Web Server to track a site visitor., 53
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HTML, , Example, Following is an example of redirecting current page to another page after 5 seconds. If you, want to redirect page immediately then do not specify content attribute., <!DOCTYPE html>, <html>, <head>, <title>Meta Tags Example</title>, <meta name="keywords" content="HTML, Meta Tags, Metadata" />, <meta name="description" content="Learning about Meta Tags." />, <meta name="revised" content="Tutorialspoint, 3/7/2014" />, , 54
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HTML, End of ebook preview, If you liked what you saw…, Buy it from our store @ https://store.tutorialspoint.com, , 55
