Hakan Hakan - 1 month ago 16
Javascript Question

Get index of clicked element using pure javascript

I need to know the index of clicked element. Can't figure out how to do it

for (i = 0; i < document.getElementById('my_div').children.length; i++) {
document.getElementById('my_div').children[i].onclick = function(){'ALERT POSITION OF CLICKED CHILD'};
}


this.index?

here is a example of what I am trying to do (it only gives back 6):

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Untitled Document</title>
<style type="text/css">
body{margin:0;}
#container div{height:50px;line-height:50px; text-align:center}
</style>
</head>
<body>
<div id="container">
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
<div>6</div>
</div>
<script>
for (i = 0; i < document.getElementById('container').children.length; i++) {
document.getElementById('container').children[i].onclick = function(){alert('Number ' + i + ' was clicked')};
}
</script>
</body>
</html>

Answer

Check this out.

Basically Your JS should have a closure,

  var g = document.getElementById('my_div');
for (var i = 0, len = g.children.length; i < len; i++)
{

    (function(index){
        g.children[i].onclick = function(){
              alert(index)  ;
        }    
    })(i);

}