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POHow to pass responseText from asynchronous AJAX call to another function?
 

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    <p>I'm using jQuery and <a href="http://keith-wood.name/countdown.html" rel="nofollow noreferrer">countdown</a> (jQuery plugin). I want the countdown to run for x seconds, where x is an integer from serverTime.php.</p> <p>Problem - I can't figure out how to return the responseText in function getTime(), so that it could be used in Timer function.</p> <p>At first I tried using pure js (without jQuery), and I found similar topics:</p> <ul> <li><a href="https://stackoverflow.com/questions/3732258/why-can-i-not-return-responsetext-from-an-ajax-function">why-can-i-not-return-responsetext-from-an-ajax-function</a></li> <li><a href="https://stackoverflow.com/questions/290214/in-ajax-how-to-retrive-variable-from-inside-of-onreadystatechange-function">in-ajax-how-to-retrive-variable-from-inside-of-onreadystatechange-function</a></li> <li><a href="https://stackoverflow.com/questions/1955248/how-to-return-variable-from-the-function-called-by-onreadystatechange-function">how-to-return-variable-from-the-function-called-by-onreadystatechange-function</a></li> <li>and others...</li> </ul> <p>Some ideas/possible solutions I've come across:</p> <ul> <li>using synchronous call and a global variable for storing response. I tried this and don't consider it an option, because it freezes the user screen (and is considered bad practice as well, in most cases)</li> <li><a href="https://stackoverflow.com/questions/3732258/why-can-i-not-return-responsetext-from-an-ajax-function/3732268#3732268">helper function</a> .</li> - </ul> <p><strong>Timer function</strong>:</p> <pre><code>$(function (){ var time = getTime(); // time is an integer $('#defaultCountdown').countdown({until: time, format: 'S', onExpiry: action}); }); </code></pre> <p><strong>getTime()</strong> checks serverTime.php and should return the content, which will be an integer. Alert(html) works, while return html does not work. I know it's because the call is asynchronous.</p> <pre><code>function getTime() { $.ajax({ url: "serverTime.php", cache: false, async: true, success: function(html) { alert(html); helperFunction(html); return html; } }); } </code></pre> <p><strong>helperFunction</strong>. Unfortunately, I don't know how to pass the result to timer function.</p> <pre><code>function helperFunction(response) { return response; } </code></pre> <p><strong>serverTime.php</strong></p> <pre><code>echo 30; // 30 seconds, just an example </code></pre> <p>I've tried to explain my problem and show that I've put some time into it. If you need additional information, just ask. Maybe I'm just thinking in the wrong direction.</p>
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