Programming Programming Languages

Advanced Javascript, 2E by Chuck Easttom

By Chuck Easttom

Specializes in professional-level JavaScript suggestions, together with the newest advancements.

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Less popular sites may only receive a few hundred hits a day, while personal web pages may only receive a few hits per week or month. The competition to get visitors to sites is becoming quite fierce. In fact, advertising dollars are now pouring in to sites that can attract a significant number of visitors. The most common way to get visitors to a site is to add content, both informational/functional and purely decorative. This is an area for which JavaScript is ideally suited. The World Wide Web (WWW) is constantly growing as new web servers and pages are connected.

The JavaScript client-side mechanism features many advantages over traditional CGI server-side scripts. For example, you might use JavaScript to check if the user has entered a valid e-mail address in a form field. The JavaScript function is executed when the user submits the form, and only if the entry is a valid e-mail address (includes an @) is the form transmitted to the server for further processing, database storage, and so on. In this case, the user does not need to wait until the form is n 7 submitted over the network to the server and back to the client, only to be informed that a single character is missing.

SCRIPT> The . Every statement you put between the two tags is interpreted as JavaScript code. This is probably the most common method for inserting JavaScript into HTML documents. The LANGUAGE attribute is used to specify the scripting language. At present, the