Javascript accessing parent function variable

Question

hi I have a Question about accessing variables that are in a parent function

var DateRangePicker = function (name, clickFunction) {
    this.context = name;
    this.UpdateGraph = clickFunction;
    this.FinalDate = function () {
        var Dates = $(this.context).find("[name=datepickerText]").val().split('-');
        return Dates[1];
    };
    this.InitialDate = function () {
        var Dates = $(this.context).find("[name=datepickerText]").val().split('-   ');
       return Dates[0];
    };
    $(this.context).find("[name=UpdateDatepicker]").click(function () {
        var pickerText = $(InnerContext).find('[name=datepickerText]');
        var dates = pickerText.val().split('-');
        UpdateGraph(InitialDate(), FinalDate());
        $(context).find("[name=Toogler]").click();
    });
    return this;
}

How can i access the "this.UpdateGraph()" function inside the updateDatepicker click so far it sais that UpdateGraph and this.UpdateGraph doesnt exists

define var self = this in parent function and use self.UpdateGraph in child function — Alex
– Alex, Commented Jun 29, 2016 at 19:16

TbWill4321 · Accepted Answer · 2016-06-29 19:22:51Z

1

You can bind the this context to your handler function, to keep from having an extra scope variable:

$(this.context).find("[name=UpdateDatepicker]").click(function () {
    var pickerText = $(this.InnerContext).find('[name=datepickerText]');
    var dates = pickerText.val().split('-');
    this.UpdateGraph(this.InitialDate(), this.FinalDate());
    $(this.context).find("[name=Toogler]").click();
}.bind(this));

answered Jun 29, 2016 at 19:22

TbWill4321

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TbWill4321 Over a year ago

I'm glad it helped. Make sure to mark an answer as accepted when you find the one that best addresses your question, so people searching know which answer worked.

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