Why isn't _this available in my callback. I see it in Closure.

[Mark Spritzler]

function inviteToEvent(event) {
    event.preventDefault();
    var friendId = $(this).data("id");
    var _this = this;
    var eventId = document.getElementById('event').getAttribute("data-id");
    var controllerUrl = "events/" + eventId + "/invite/" + friendId;
    $.post(controllerUrl, function() {
        $("#" + friendId).toggle();
        _this.toggle();
        userChangedGuestInformation(eventId);
    });
}

Especially since friendId is available and working, but in the callback _this is showing as undefined.

Thanks

Mark

[Mark Spritzler]

I changed the code to work, kind of a hack, but it works

function inviteToEvent(event) {
    event.preventDefault();
    var friendId = $(this).data("id");
    var eventId = document.getElementById('event').getAttribute("data-id");
    var controllerUrl = "events/" + eventId + "/invite/" + friendId;
    $.post(controllerUrl, function() {
        $("#" + friendId).toggle();
        $("#invite" + friendId).toggle();
        userChangedGuestInformation(eventId);
    });
}

So I added an ID to the <a link and grab it via that ID, instead of it being the this to the inviteToEvent function. <br /> <br /> Mark rel="nofollow">

[Gregg Bolinger]

What if you do

$(event.target).toggle();

[Bear Bibeault]

_this.toggle() won't work because _this is not a jQuery wrapped set.

[Mark Spritzler]

Bear Bibeault wrote:_this.toggle() won't work because _this is not a jQuery wrapped set.

So toggle is a JQuery method and that is why I can't call that method.

But still, I found it very odd that _this was undefined in my callback, when it was obviously declared in the outer enclosing function.

So while I wouldn't be able to call toggle(), I should still see it defined and usable with POJS, Plain Ol JavaScript.

Thanks.

I will try Eric's suggestion and see what happens.

Mark

[Eric Pascarello]

My solution? You on drugs. I look nothing like Gregg

[Gregg Bolinger]

Eric Pascarello wrote:My solution? You on drugs. I look nothing like Gregg

Which is unfortunate for you.

[Mark Spritzler]

Eric Pascarello wrote:My solution? You on drugs. I look nothing like Gregg

Well, I thought it was a great suggestion, and besides Bear, Eric is the one with the always awesome great suggestions, so I just assumed it was Eric's.

Gregg does have some good suggestions, as long as he has had his meds that day. ;)

Mark