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copied!<p>You can listen for ajax calls, but that gets overly complicated, depending on the target pages. The most robust way to get ajax-ified content on a wild page is to poll for it, like so:</p> <pre><code>function myCode (jNode) { //YOUR CODE HERE var damageMessage = jNode.text(); //... } waitForKeyElements (".mw_error", myCode, false, "iframe"); function waitForKeyElements ( selectorTxt, /* Required: The jQuery selector string that specifies the desired element(s). */ actionFunction, /* Required: The code to run when elements are found. It is passed a jNode to the matched element. */ bWaitOnce, /* Optional: If false, will continue to scan for new elements even after the first match is found. */ iframeSelector /* Optional: If set, identifies the iframe to search. */ ) { var targetNodes, btargetsFound; if (typeof iframeSelector == "undefined") targetNodes = $(selectorTxt); else targetNodes = $(iframeSelector).contents () .find (selectorTxt); if (targetNodes && targetNodes.length > 0) { /*--- Found target node(s). Go through each and act if they are new. */ targetNodes.each ( function () { var jThis = $(this); var alreadyFound = jThis.data ('alreadyFound') || false; if (!alreadyFound) { //--- Call the payload function. actionFunction (jThis); jThis.data ('alreadyFound', true); } } ); btargetsFound = true; } else { btargetsFound = false; } //--- Get the timer-control variable for this selector. var controlObj = waitForKeyElements.controlObj || {}; var controlKey = selectorTxt.replace (/[^\w]/g, "_"); var timeControl = controlObj [controlKey]; //--- Now set or clear the timer as appropriate. if (btargetsFound && bWaitOnce && timeControl) { //--- The only condition where we need to clear the timer. clearInterval (timeControl); delete controlObj [controlKey] } else { //--- Set a timer, if needed. if ( ! timeControl) { timeControl = setInterval ( function () { waitForKeyElements ( selectorTxt, actionFunction, bWaitOnce, iframeSelector ); }, 500 ); controlObj [controlKey] = timeControl; } } waitForKeyElements.controlObj = controlObj; } </code></pre> <hr> <hr> <p>Beware that Greasemonkey can also run on iFrames, so you may not need to do anything other than know if you're in an iFrame, depending upon the script's purpose.</p> <p>Conversely, you can get unexpected results if the GM script(s) fire on the iFrame URL when you haven't planned on it.</p> <p>For example, suppose you had this page at URL_A:</p> <pre><code><body> <iframe src="URL_B"></iframe> </body> </code></pre> <p>And the GM script's <code>// @include</code> directive(s) covered both urls (<code>// @include URL_*</code>, etc.).</p> <p>Then if the script just had <code>alert ('Script start.');</code>, you would see 2 alerts upon loading the page.</p>

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