MACROMEDIA DREAMWEAVER MX 2004-EXTENDING DREAMWEAVER Spezifikationen PDF herunterladen (Seite 106)

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101

106 Extending Dreamweaver

How Dreamweaver processes JavaScript in

extensions

Dreamweaver checks the Configuration/extension_type folder during startup. If it encounters

an extension file within the folder, Dreamweaver processes the JavaScript by completing the

following steps:

■ Compiling everything between the beginning and ending SCRIPT tags

■ Executing any code within SCRIPT tags that is not part of a function declaration

Dreamweaver performs the following actions for any external JavaScript files that are specified

in the

SRC attributes of SCRIPT tags:

■ Reads in the file

■ Compiles the code

■ Executes the procedures

Dreamweaver executes code in the

onLoad event handler (if one appears in the BODY tag)

when the user selects the command or action from a menu for the Command and Behavior

action extension types.

Dreamweaver executes code in the

onLoad event handler on the BODY tag if the body of the

document contains a form for object extensions.

Dreamweaver ignores the

onLoad handler on the BODY tag in the following extensions:

■ Data translator

■ Property inspector

■ Floating panel

For all extensions, Dreamweaver executes code in other event handlers (for example,

onBlur="alert('This is a required field.')") when the user interacts with the form

fields to which they are attached.

NOTE

This procedure is necessary during startup because some extensions might require

global variables to initialize.

NOTE

If any JavaScript code in your extension file contains the string “</SCRIPT>”, the

JavaScript interpreter reads the string as an ending

SCRIPT tag and reports an

unterminated string literal error. To avoid this problem, break the string into pieces

and concatenate them like this:

"<' + '/SCRIPT>".

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