Get jquery selector from object parameter

Question

box_tpv1 = {
    box:$("#box_tpv1"),
    open:function(mensaje,f_ok,f_x){
        this.box.show()
    }
}

And when I call this box_tpv1.open() won't work, but If I write inside open function $("#box_tpv1").show() it works.

You have to use closures. this in your example refers to the anonymous function. — BenM
– BenM, Commented Jan 31, 2013 at 9:16
Try to add a console.log(this.box); in open function to see what it contains. — Spin0us
– Spin0us, Commented Jan 31, 2013 at 9:16

techfoobar · Accepted Answer · 2013-01-31 09:28:53Z

1

In your case, box_tpv1 is a singleton object, which cannot be further instantiated using new. Which means the value of this is insignificant.

You might as well simply call box_tpv1.box.show() inside the open function.

answered Jan 31, 2013 at 9:28

techfoobar

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2 Comments

jsertx Over a year ago

It won't work, and how It would be instatiated with new? I don't understand very well objects in javascript :(

techfoobar Over a year ago

This should clarify things regarding objects in JS: developer.mozilla.org/en-US/docs/JavaScript/Guide/…

Parv Sharma · Accepted Answer · 2013-01-31 09:16:58Z

0

there might be issues on the context this function is being called and that depends upon from where are you calling this function from try calling like this

box_tpv1.open.call(box_tpv1);

answered Jan 31, 2013 at 9:16

Parv Sharma

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Comments

jsertx · Accepted Answer · 2013-01-31 09:52:00Z

0

I don't know why but I solved it this way, I can get with this.box the value inside the object methods but doesnt work the jquery selector, if I do that it works

box_tpv1 = {
    box:"#box_tpv1",
    open:function(mensaje,f_ok,f_x){
        $(this.box).show()
    }
}

answered Jan 31, 2013 at 9:52

jsertx

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