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POServe jquery-ajax one by one
 

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  1. POServe jquery-ajax one by one
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    <p>I have some tasks that I need them to be executed in order one by one:</p> <pre><code>function doTasks(tasks, urlDoTask) { // Create a deferred for each task by calling doTask(). var deferreds = $(tasks).map(function (i, task) { return doTask(task, urlDoTask); }).toArray(); // return a composite deferred which will wait for each of the doTask requests. return $.when.apply($, deferreds); } function doTask(task, urlDoTask) { return ajax({ url: getRootDir() + urlDoTask, data: { param: task.SomeParam }, type: 'POST', dataType: 'json' }).then(function (data) { return ok(createObject("status", "ok", "op", "doTask", "task", task, "data", "passed")); }, function (data) { return ok(createObject("status", "fail", "op", "doTask", "task", task, "data", "failed")); }); } function ok() { return newPromise("resolve", arguments); } function newPromise(type, args) { return $.Deferred(function (dfd) { dfd[type].apply(dfd, args); }).promise(); } function createObject() { var ob = {}; // copy all the arguments name/value pairs into the object for (var i = 0; i &lt; arguments.length; i += 2) { var n = arguments[i]; var v = arguments[i + 1]; ob[n] = v; } return ob; } </code></pre> <p>How can I modify this code to make each doTask to be executed in order one by one? I have thought in using jquery queue but how to apply here? Maybe doing something like:</p> <pre><code> var deferreds = $(tasks).map(function (i, task) { $({}).queue(doTask(task, urlDoTask)); }).toArray(); </code></pre> <p>and once each task has completed do next()?</p>
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    1. CO@charlietfl I need data from each task to process into next task, for example, If I have task1, task2 and task3 what I want is to execute them in order, I mean, send jquery ajax calls in order, in this example, first send task1, when task1 completes, send task2, when task2 completes, send task3.
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    2. COOK so you don't want array of deferreds then that you are getting useing `map`....you need to handle one deferred at a time...which is basically already there using `.done()` in `$.ajax` as others sugegst
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