Add javascript into a web page, PHP Web Programming

As you know HTML (Hypertext Markup Language) is the language you employ to generate Web documents. You should have created "Hello World!" as given below:

<HTML>

<HEAD><TITLE>My First Page</TITLE></HEAD>

<BODY> Hello World!

</BODY>

</HTML>

In order to add JavaScript to a page, you'll employ a similar tag: <SCRIPT>.

The <SCRIPT> tag tells the browser to begin treating the text like a script, and the </SCRIPT> tag returns to the regularly scheduled HTML as given below. Note down that the file will be stored as.html or.htm.

485_Add JAVASCRIPT INTO A WEB PAGE.png

The output of the above program will be

1446_Add JAVASCRIPT INTO A WEB PAGE1.png

In this instance, we placed the script in the body of the HTML document. Actually there are four distinct places where you can employ scripts:

In body of the page. In this case, the output of script is displayed, as part of the HTML document, while the browser loads page.
In the header of the page, among the <HEAD> tags. In the header scripts aren't immediately executed, though can be referred to by other scripts. The header is frequently used for functions.
Inside an HTML tag. It is called an event handler and let the script to work with HTML elements. Event handlers are one kind of script where you don't require using the <SCRIPT> tag.
In a separate file completely JavaScript supports the employ of files with the .js extension containing scripts; these can be included by mentioning a file in the <SCRIPT> tag. This feature works just in Netscape Navigator 3.0 or later and Internet Explorer 4.0 or later.

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