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addLBEvent : function()
{
var amount = this.imageList.length;
for(var i = 0;i < amount;i++)
{
if(this.imageList[i].addEventListener)
{
this.imageList[i].addEventListener("click",this.startLB,false);
}
/*
IE<9-part
*/
}
},
startLB : function(src)
{
}
I'd like to know which element triggered the event.
If I'd do this in the HTML-Code I'd write something like onlick="startLB(this.src)"
for example. How can I do such a thing with addEventListener
?
I've already tried `addEventListener("click","myobjectname.startLB(this.src)" but it didn't work.
And sorry for my bad English
addLBEvent : function()
{
var amount = this.imageList.length;
for(var i = 0;i < amount;i++)
{
if(this.imageList[i].addEventListener)
{
this.imageList[i].addEventListener("click",this.startLB,false);
}
/*
IE<9-part
*/
}
},
startLB : function(src)
{
}
I'd like to know which element triggered the event.
If I'd do this in the HTML-Code I'd write something like onlick="startLB(this.src)"
for example. How can I do such a thing with addEventListener
?
I've already tried `addEventListener("click","myobjectname.startLB(this.src)" but it didn't work.
And sorry for my bad English
Share Improve this question asked May 18, 2012 at 7:50 SindharaSindhara 1,48314 silver badges20 bronze badges6 Answers
Reset to default 5An event object
is passed in as the first argument to any event handler.
The event object as a target
property identifying the element to which the event applies.
addLBEvent : function(event) {
console.log(event.target);
}
https://developer.mozilla/en/DOM/event.target
You can access a reference to the element that triggered the event...
var elementThatTriggeredEvent = e.target || e.srcElement;
...assuming that e
is the reference to the event.
If you want to know which element was clicked, use event.target
.
If you want to know which element you had the handler on, use event.currentTarget
or, in most cases, this
. addEventListener
will call your handler with this
set to the element on which you called addEventListener
.
Note the distinction. For instance, if you had this markup:
<div id="foo"><span id="bar">Hi there</span></div>
...and this code:
document.getElementById("foo").addEventListener('click', function(event) {
alert(this.id);
alert(event.target.id)
}, false);
...then if the user clicks the text "Hi there", this
will be the div
but event.target
will be the span
.
Live example | source
See how this
is the element you hooked the event on, and event.target
is the element on which it fired (and then it bubbled up to the div
).
Note that addEventListener
isn't available on older versions of IE; you have to use attachEvent
instead. attachEvent
doesn't ensure that this
is set to the element on which you hooked it, so beware that difference between APIs. To smooth things like that out, you might look to any decent library, like jQuery, YUI, Closure, or any of several others.
Use this:
startLB : function(src)
{
var element = src.target.tagName;
alert("element >> "+element);
}
I think it's best for you to bind it like this:
var that = this;
this.imageList[i].addEventListener("click",function() {
that.startLB(this.src);
},false);
this
will bee the event target, so we have to access the object somehow, I named that that
try this...
addLBEvent : function(e)
{
if (!e) e = event;
e = e.srcElement || e.target;
.......
}
本文标签: javascriptHow can I check on which element the event was triggeredStack Overflow
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