Mini:Javascript
Javascript is a scripting language used primarily for websites. A webpage may contain javascript code within it, indicated by<src type="text/javascript">tags in HTML.
This code is executed by a browser when the the page is loaded. This allows the webpage to respond to user input. The operations that this code may perform are restricted so that scripts should be unable to cause damage.
Examples of operations performed in javascript include
- Verifying a forms content before sending it.
- Creating popup windows.
- Changing the content of a webpage in response to the users action. (e.g creating changing pictures displayed when a button is clicked, making an object move)
Javascript is used extensively on the internet.
ECMAScript is a subset of javascript that has a complete specification produced for it to aid implementers.
JScript (create) is a Microsoft's version of JavaScript implemented in Internet Explorer. The different versions of javascript will tend to have slight inconsistencies.
[edit] Links
- There is a (very) complete specification for ECMAscript available here.
- Mozilla has a language and API reference, and a programming guide here.
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