JDocument/addScriptDeclaration

Adds an internal script to the document object. The script is appended to the document objects' internal script buffer for the specified type.

Syntax

void addScriptDeclaration( $content, $type )

where:

Argument	Data type	Description	Default
$content	string	Script content.
$type	string	MIME type of script.	'text/javascript'

Example 1

To add a Hello World alert in JavaScript, you could use:

$content = 'alert( \'Hello Joomla!\' )';
$doc =& JFactory::getDocument();
$doc->addScriptDeclaration( $content );

Notice that quotation marks in the JavaScript code will need to be escaped by preceding them with a backslash character.

Example 2

Adding a slightly more realistic piece of JavaScript:

function getJavaScript($message) {
    $javascript .= 'if(window.addEventListener){ // Mozilla, Netscape, Firefox' . "\n";
    $javascript .= '    window.addEventListener("load", function(){ alert("' . $message . '");}, false);' . "\n";
    $javascript .= '} else { // IE' . "\n";
    $javascript .= '    window.attachEvent("onload", function(){ alert("' . $message . '");});' . "\n";
    $javascript .= '}';
    return $javascript;
}
 
$doc =& JFactory::getDocument();
$doc->addScriptDeclaration( getJavaScript( 'This will appear in an alert box after the page loads.' ) );

See also

• JDocument->addScriptDeclaration on api.joomla.org
• JDocument->addScript