set sequence of functions with .when and .done in jQuery

Question

trying to display data only after variables have been set.

$("document").ready(function () {
    function setdata() {
        var mydata = '123';
    };

    $.when(setdata()).done(function () {
        $(".content").text(mydata);
    });
});

Setting variables is already synchronous, there is no need to use $.when(). — lanzz
– lanzz, Commented Jun 19, 2012 at 14:36
I have a function that seems to be operating before the variables are set; I'm trying to ensure there's a proper sequence — nathanbweb
– nathanbweb, Commented Jun 19, 2012 at 14:37
If you have such a function, it is apparently not being called in your ready() handler. — lanzz
– lanzz, Commented Jun 19, 2012 at 14:38
What do you think that code is suppsed to do? setdata does not return a promise object, why is it being passed to $.when? the $.when will return a resolved promise object if you don't give it a promise object and the .done will be called immediately since it is already resolved. Sure, it will work, but it is pointless. — user400654
– user400654, Commented Jun 19, 2012 at 14:50

user400654 · Accepted Answer · 2012-06-20 12:31:35Z

2

You don't need $.when in this case since you aren't actually passing it a promise object.

$("document").ready(function () {
    var mydata;
    function setdata() {
        mydata = '123';
    };

    setdata();
    $(".content").text(mydata);
});

Is setdata doing more than what you are showing in your question? I'm guessing it does an ajax request, in which case it should look like this:

$("document").ready(function () {
    function setdata() {
        return $.ajax(ajaxOptions);
    };

    setdata().done(function(mydata){
        $(".content").text(mydata);
    });
});

edited Jun 20, 2012 at 12:31

answered Jun 19, 2012 at 14:54

user400654

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