May 2, 2012
JavaScript dynamic function name
Question by John R
I need to dynamically assign the name of a function to an element of an associative array. This is my attempt which does not work. The problem I am asking for help with is here where I try to call the function: cr['cmd1'](x);
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
var cr =[];
var x = 5;
cr['cmd1'] ='foo';
var msg = cr['cmd1'](x);
alert(msg);
function foo(y){
return y;
}
</script>
</head>
<body>
</body>
</html>
Edit: I being passed a string here cr['cmd1'] ='foo'; that I cannot control. That is why I have to work with a string as a starting point from an external application.
Answer by Starx
Access the functions using this syntax window[function_name]('para1');
Your usage will be something like this
var msg = window[cr['cmd1']](x);
