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POJavascript Module Pattern and jquery Ajax wait issue
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  1. POJavascript Module Pattern and jquery Ajax wait issue
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    copied!<p>I have written a custom js module that basically sends messages and needs to wait for a response in order to continue:</p> <pre><code>var manageBooking = (function (jQ) { //decalre private variables var domain, msgRecieved, msgResponse, validationValue; //decalre private functions var sendMessage, wait; // A private variables domain = document.domain; msgRecieved = false; msgResponse = null; wait = function(timeOutStep){ var w; console.log('msgRecieved', msgRecieved); if (msgRecieved === true) { clearTimeout(w); return; } else { console.log('waiting..'); w = setTimeout(wait, timeOutStep, timeOutStep); } } // A private function to send messages sendMessage = function( requestURL, data, type ) { console.log(requestURL); console.log(data); console.log(type); //reset vars to defaults msgRecieved = false; msgResponse = null; jQuery.ajax({ url: "http://"+domain+"/_ajax/"+requestURL, dataType: "html", async: true, data: data, type: type, success: function(msg){ console.log(msg); msgResponse = msg; msgRecieved = true; } }); console.log('after ajax call'); wait(500); console.log('after wait'); console.log('msgRecieved', msgRecieved); return; }; return { // A public variable errorMsg: "", validationName: "", bookingID: "", output: "", // A public function to login login: function( enteredBookingID, enteredSurname ) { // Call private sendMsg sendMessage("user_login/"+enteredBookingID+"/"+enteredSurname, null, 'GET'); console.log(msgResponse); throw "error"; //check response var patt=/Sorry/i; //test pattern var result=patt.test($.trim(msgResponse)); //if false OK if (result === false) { var split = msgResponse.split('|'); validationName = split[0]; validationValue = split[1]; bookingID = enteredBookingID return true; } //else error errorMsg = msgResponse; return false; } }; })(jQuery); manageBooking.login(123,123); </code></pre> <p>The issue i am having is forcing the <code>sendMessage</code> function to wait until the ajax completes and sets <code>msgRecieved</code> to true.</p> <p>However it appears that the <code>sendMessage</code> function hits the <code>wait</code> function once and then continues. the following console output shows the order of events:</p> <pre><code>GET http://website/_ajax/user_login/123/123 after ajax call //sendMessage() msgRecieved, false //wait() waiting.. //wait() after wait //sendMessage() msgRecieved, false //sendMessage() null//login() uncaught exception: error //login() &lt;p&gt;Sorry, we cannot locate your details. &lt;/p&gt; &lt;!-- jQuery Ajax call --&gt; msgRecieved, true //wait() </code></pre> <p>What I am confused with is that the <code>wait</code> function seems to fire again right at the end.. </p> <p>can anyone give me some pointers on getting this to work?</p>
 

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