first unbind click and then bind (jquery)

Question

1.I have a onclick event on,

$('#locations').click(function(){
$('#train').unbind('click'); 
//do some stuff
}

2.Once the close button is clicked

$('.close').click(function(){
//do some stuff
}

3.Then again if I click #train

$('#train').bind('click', function() {
alert('train is clicked');
//do some stuff
}

Now the problem is #train is not firing.Is it to bind the event again on .close function?

Please suggest.Thanks in advance.

Do want to re-bind the #train element after the close button is clicked? — Ankit Jaiswal, Jun 22 '13 at 11:40
what version of jQuery are you using? use `.on` and `.off` instead of `.bind`. — Omar, Jun 22 '13 at 11:40
Ankit yes that's what I want to do.So once the close button/id is clicked I can click #train again. — Prithviraj Mitra, Jun 22 '13 at 11:43

score 43 · Accepted Answer · edited Jun 25 '19 at 18:51

Looking at your question, you do not seem to bind back the click after you unbind it, so it will not fire. (Assuming you've kept the sequence of your functionality right). You'll have to do it this way:

//Set a function with the action you need to do after you click the train
function  trainClick() {
  alert('train is clicked');
  //do some stuff
}

When you're unbinding, call unbind with the function name:

$('#locations').click(function(){
 $('#train').unbind('click',trainClick);
//do some stuff
}

Then, to bind the click (when #close is clicked), you'd use :

$('.close').click(function(){
  $('#train').bind('click',trainClick);
  //do some stuff
}

NOTE :

A better way would be use on and off, if you are using a version greater than jQuery v1.7 because, well.. then it will not work. In the code above, just replace bind with on and unbind with off.

$('#train').on('click',trainClick);
$('#train').off('click',trainClick);

Hope this helps!

Thanks PC.Please give me sometime to test with it...will get back to you soon. — Prithviraj Mitra, Jun 22 '13 at 11:45

score 7 · Answer 2 · edited Nov 05 '15 at 21:24

BINDING AND UNBINDING HANDLERS

The Key is Scope.

You must declare and define the function (trainClick(){stuff it does}) outside the event-handler so that the other buttons' functions can see it.

Below is an example.

function trainClick()
{
    alert("train is clicked"); //Notice this function is declared outside event handlers below
}
$('#button1').on("click", trainClick); //this calls the above function

$("#button2").on("click",function(){
    $("#button1").off("click",trainClick); //unbinds button1 from trainClick() function (event handler)
});//End Button 2 click

$("#button3").on("click",function(){
    $("#button1").on("click",trainClick); //binds button1 to trainClick() function (event handler)
});//End Button 2 click

first unbind click and then bind (jquery)

2 Answers2

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