CODEWITHSUNDEEP
javascriptjquery
Fane
Fane

Reputation: 2074

How to pass 'this' element via jquery on.('click') to the inside function

If I had an element such as 

<div class='some_class' onclick='executeF(this)'/>

would this be equivalent to:

$('.some_class').on('click',function(e){
    executeF(this);
});

or

$('.some_class').on('click',function(e){
    executeF(e);
});

or

$('.some_class').on('click',function(e){
    executeF($(this));
});

I don't have the means to test this at the moment so I just wanted to make sure what would be the direct correspondent jquery method before going further on my coding since (again) I can't test this right now

Upvotes: 5

Views: 15883

Answers (5)

Bindrid
Bindrid

Reputation: 3735

Before you implement one of the solutions above, be sure you understand the difference between e.target and e.currentTarget. You should probably take a look at Difference between e.target and e.currentTarget

Upvotes: 0

alphapilgrim
alphapilgrim

Reputation: 3975

Short answer would be to pass this like so. 

  ExecuteF(){ Var elm = $this; Some other code for this function }

$('.some_class').on('click', executeF);

https://api.jquery.com/click/

Also might want to take a look at this post about obtrusive js

https://stackoverflow.com/a/8392446

Upvotes: 0

Rajesh
Rajesh

Reputation: 24915

$('.some_class').on('click',function(e){
    executeF(e);
});

In above code, e stands for event object. To get current DOM element, you will need to use e.currentTarget

This here will represent the DOM element which has triggered event.

$(this) will give you jQuery's element array. can

You can test this on following code:

function Click(el) {
  console.log(el)
}

$(".some_class").on("click", function(e) {
  console.log("Event: ", e);
  console.log("Current Target of Event: ", e.currentTarget);
  console.log("this: ", this);
  console.log("$(this): ", $(this));
})
div {
  height: 100px;
  width: 100px;
  border: 1px solid silver;
  margin: 10px;
  padding: 10px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<div onclick="Click(this)">JS</div>
<div class="some_class">JQuery</div>

Hope this helps!

Upvotes: 8

Jas
Jas

Reputation: 336

The one which will be the equivalent will be the first one. 

$('.some_class').on('click',function(e){
    executeF(this);
});

The argument 'e' refers to the 'Event' which invoked the function. 

e.type = 'click'

The toElement method on event can give you back the element on which the event occurred as below

e.toElement

When a the 'onclick' is assigned as an attribute , "this" always refers to the 'DOMElement' which means the reference of 'this' is passed as an 'element'.

Upvotes: 0

Pointy
Pointy

Reputation: 413702

Callback functions in jQuery are invoked such that the value of this is a reference to the DOM element handling the event. Your first bit of sample code is therefore correct; the executeF() function will be passed the DOM element reference.

In the case of delegation:

$(document).on("click", ".some_class", function() {
  // `this` refers to the "some_class" element
});

the same still holds: this will refer to the delegate target element, as if the event handler were directly associated with it.

Upvotes: 0

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