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POWaiting for Javascript function completion in HTML
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copied!<p>How to ensure that a Javascript function is finished before moving on to the next line in the HTML code.</p> <p>For eg : I am having a Javascript code in <code>main()</code> and calling tht as shown below. Before this finish off, the next line of HTML code like loading a JPEG is showing up in the webbrowser. Is there any way I could ensure the <code>main()</code> call is executed completely. </p> <pre><code><script language="JavaScript" type="text/javascript"> main();</script> </code></pre> <p>As some of you guessed correctly,There is an asynchroous call within the main() which uses a XMLHTTPRequest() to get some of the values I need to form the webpage. The function main is a s below</p> <pre><code>function main() { var requestor = new net.Requestor("admin/getparam.cgi?mainvideostream&codectype", CurrentHandler); } </code></pre> <p>and net.Requestor=function(url,onload,onerror,method,params,contentType) within this thers is and XMLHTTPRequest(...)</p> <p>And the Currenthandler is another function which deals with the response from the requset.</p> <pre><code> function CurrentHandler() { settings = this.req.responseText.split("\n"); for(var j=0; j<settings.length-1; j++) { var currentST= settings[j].split("="); name = currentST[0]; value = currentST[1]; switch(name) { case "mainvideostream": cur_camid = value; break; case "codectype": stream = value; break; } } mainSection(); } </code></pre> <p>So I have to find out the stream variable before loading the page.</p>

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