HTML 5 Basics Part Three
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First developed by Tim Berners-Lee in 1990, HTML is short for HyperText Markup Language. HTML is used to create electronic documents (called pages) that are displayed on the World Wide Web. Each page contains a series of connections to other pages called hyperlinks.
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HTML 5 Basics Part Three
- 1. HTML Form Elements • The <select> Element • The <select> element defines a drop-down list • <select name="cars"> <option value="volvo">Volvo</option> <option value="saab">Saab</option> <option value="fiat">Fiat</option> <option value="audi">Audi</option> </select>
- 2. Form Option • The <option> elements defines an option that can be selected. • By default, the first item in the drop-down list is selected. • To define a pre-selected option, add the selected attribute to the option:
- 3. The <textarea> Element • The <textarea> element defines a multi-line input field (a text area): • The rows attribute specifies the visible number of lines in a text area. • The cols attribute specifies the visible width of a text area.
- 4. The <button> Element • The <button> element defines a clickable button: <button type="button">Click Me!</button>
- 5. HTML5 Form Elements HTML5 added the following form elements: • <datalist> • <keygen> • <output> Note: Browsers do not display unknown elements. New elements that are not supported in older browsers will not "destroy" your web page.
- 6. HTML5 <datalist> Element • The <datalist> element specifies a list of pre- defined options for an <input> element. • Users will see a drop-down list of the pre- defined options as they input data. • The list attribute of the <input> element, must refer to the id attribute of the <datalist> element.
- 7. HTML5 <keygen> Element • The purpose of the <keygen> element is to provide a secure way to authenticate users. • The <keygen> element specifies a key-pair generator field in a form. • When the form is submitted, two keys are generated, one private and one public. • The private key is stored locally, and the public key is sent to the server. • The public key could be used to generate a client certificate to authenticate the user in the future
- 8. HTML Marquees • An HTML marquee is a scrolling piece of text displayed either horizontally across or vertically down your webpage depending on the settings. This is created by using HTML <marquees> tag. ***Note: The HTML <marquee> tag may not be supported by various browsers so its not recommended to rely on this tag, instead you can use Javascript and CSS to create such effects.
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