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POJavascript alert not defined . .
 

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    <p>I am creating a javascript xpcom component Its source is as follows-</p> <pre><code>Components.utils.import("resource://gre/modules/XPCOMUtils.jsm"); function callback() { } callback.prototype = { classDescription: "My Hello World Javascript XPCOM Component", classID: Components.ID("{3459D788-D284-4ef0-8AFF-96CBAF51BD35}"), contractID: "@jscallback.p2psearch.com/f2f;1", QueryInterface: XPCOMUtils.generateQI([Components.interfaces.ICallback]), received:function(data){ alert("Received: " +data); }, status:function(data){ alert("Status: "+data); }, expr:function(data){ alert("Expr: "+expr); } }; var components = [callback]; function NSGetModule(compMgr, fileSpec) { return XPCOMUtils.generateModule(components); } </code></pre> <p>When I call it using:</p> <pre><code>try { const p2pjcid = "@jscallback.p2psearch.com/f2f;1"; var jobj = Components.classes[p2pjcid].createInstance(); jobj = jobj.QueryInterface(Components.interfaces.ICallback); jobj.received("Hello from javascript") } catch (err) { alert(err); return; } </code></pre> <p>I get Error as : </p> <pre><code>[Exception... "'[JavaScript Error: "alert is not defined" {file: "file:///C:/Documents%20and%20Settings/mypc/Application%20Data/Mozilla/Firefox/Profiles/ngi5btaf.default/extensions/spsarolkar@gmail/components/callback.js" line: 11}]' when calling method: [ICallback::received]" nsresult: "0x80570021 (NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS)" location: "JS frame :: chrome://sample/content/clock.js :: initClock :: line 28" data: yes] </code></pre>
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