Map each item in an array
Description
.map() accepts an array or array-like object as its first argument and a callback function.
The callback function is a function to process each item against - accepts one of the array elements and its current index.
Example
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
$.ready(function(){<!--from w ww . j a v a 2s. com-->
var numArray = [ 4,1024,2048,4096];
console.log( numArray );
var newArray = $.map(numArray, function(value, index){
return Math.sqrt( value ).toFixed(4);
});
console.log( newArray );
});
</script>
</head>
<body>
</body>
</html>