 | JavaScript | |||
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| Availability: |
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| Inherits from: | Element object | ||||||
| JavaScript syntax: | IE | mySCRIPT = myDocument.all.anElementID | |||||
| IE | mySCRIPT = myDocument.all.tags("SCRIPT")[anIndex] | ||||||
| IE | mySCRIPT = myDocument.all[aName] | ||||||
| - | mySCRIPT = myDocument.getElementById(anElementID) | ||||||
| - | mySCRIPT = myDocument.getElementsByName(aName)[anIndex] | ||||||
| - | mySCRIPT = myDocument.getElementsByTagName("SCRIPT")[anIndex] | ||||||
| HTML syntax: | <SCRIPT> ... </SCRIPT> | ||||||
| Argument list: | anIndex | A reference to an element in a collection | |||||
| aName | An associative array reference | ||||||
| anElementID | The ID value of an Element object | ||||||
| Object properties: | charset, defer, event, htmlFor, readyState, recordNumber, src, text, type | ||||||
| Event handlers: | onClick, onDblClick, onError, onHelp, onKeyDown, onKeyPress, onKeyUp, onLoad, onMouseDown, onMouseMove, onMouseOut, onMouseOver, onMouseUp, onReadyStateChange | ||||||
Given that you can access a SCRIPT object, you may be tempted to write some self-modifying code. This is not recommended. You should be able to accomplish everything you need to do in that respect with an eval() method and that would be more widely supported across browsers.
Accessing the script block may be useful to ascertain whether a particular function is available, although you should know that since you wrote the page yourself. On the other hand, if you imported a script block with a reference to a .js file, you may not know the provenance of its contents.
In the example, the source text is extracted from a script block and executed with an eval() function. The variable value is set according to the evaluated script which replaces the default value.
<HTML> <HEAD></HEAD> <BODY> <SCRIPT ID="ONE"> block = "ONE"; </SCRIPT> <SCRIPT ID="TWO"> block = "TWO"; </SCRIPT> <SCRIPT ID="THREE"> block = "THREE"; </SCRIPT> <SCRIPT ID="FOUR"> block = "FOUR"; mySourceText = eval(document.scripts.THREE.text); document.write(block); </SCRIPT> </BODY> </HTML>
| See also: | Document.scripts[], Element object |
| Property | JavaScript | JScript | N | IE | Opera | NES | ECMA | DOM | CSS | HTML | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| charset | 1.5  |  | 6.0 | | | | | 1 | | |  |
| defer | 1.5 | 3.0 | 6.0 | 4.0 | | | | 1 | | | |
| event | 1.5 | 3.0 | 6.0 | 4.0 | | | | 1 | | |
, ReadOnly. |
| htmlFor | 1.5 | 3.0 | 6.0 | 4.0 | | | | 1 | | |
, ReadOnly. |
| readyState | | 3.0 | | 4.0 | | | | | | | ReadOnly. |
| recordNumber | | 3.0 | | 4.0 | | | | | | |
, ReadOnly. |
| src | 1.5 | 3.0 | 6.0 | 4.0 | | | | 1 | | |
, ReadOnly. |
| text | 1.5 | 3.0 | 6.0 | 4.0 | | | | 1 | | |
, ReadOnly. |
| type | 1.5 | 3.0 | 6.0 | 4.0 | | | | 1 | | |
, ReadOnly. |
| Event name | JavaScript | JScript | N | IE | Opera | NES | ECMA | DOM | CSS | HTML | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| onClick | 1.5 | 3.0 | 6.0 | 4.0 | | | | | | 4.0 | |
| onDblClick | 1.5 | 3.0 | 6.0 | 4.0 | | | | | | 4.0 | |
| onError | 1.5 | 3.0 | 6.0 | 4.0 | | | | | | | |
| onHelp | | 3.0 | | 4.0 | | | | | | | |
| onKeyDown | 1.5 | 3.0 | 6.0 | 4.0 | | | | | | 4.0 | |
| onKeyPress | 1.5 | 3.0 | 6.0 | 4.0 | | | | | | 4.0 | |
| onKeyUp | 1.5 | 3.0 | 6.0 | 4.0 | | | | | | 4.0 | |
| onLoad | 1.5 | 3.0 | 6.0 | 4.0 | | | | | | | |
| onMouseDown | 1.5 | 3.0 | 6.0 | 4.0 | | | | | | 4.0 | |
| onMouseMove | 1.5 | 3.0 | 6.0 | 4.0 | | | | | | 4.0 | |
| onMouseOut | 1.5 | 3.0 | 6.0 | 4.0 | | | | | | 4.0 | |
| onMouseOver | 1.5 | 3.0 | 6.0 | 4.0 | | | | | | 4.0 | |
| onMouseUp | 1.5 | 3.0 | 6.0 | 4.0 | | | | | | 4.0 | |
| onReadyStateChange | | 3.0 | | 4.0 | | | | | | | - |
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| Script fragment | Up | SCRIPT.charset |
JavaScript Programmer's Reference, Cliff Wootton Wrox Press (www.wrox.com) Join the Wrox JavaScript forum at p2p.wrox.com Please report problems to support@wrox.com © 2001 Wrox Press. All Rights Reserved. Terms and conditions. | ||