Load javascript function from variable name

Question

How do I load a javascript function from a variable name. For example:

var variable = 'world';

function helloworld()
{
 // blah
}

// I want to load helloword();
hello + variable + ();

How would I load helloworld() function like this?

Why don't you do hello(variable) instead?

bozdoz
– bozdoz

2013-01-10 17:29:06 +00:00
Commented Jan 10, 2013 at 17:29 — bozdoz
– bozdoz, Commented Jan 10, 2013 at 17:29

VisioN · Accepted Answer · 2013-01-10 17:29:02Z

7

If helloworld function is defined in global scope, then use:

window["hello" + variable]();

answered Jan 10, 2013 at 17:29

VisioN

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1 Comment

VisioN Over a year ago

@David It works if you change the scope from onLoad of MooTools: jsfiddle.net/k6FsU/1.

Marco · Accepted Answer · 2013-01-10 17:43:57Z

0

Depending on how many functions you have, you could do this:

var variable = "world"

var hello = {
  world : function() { /* Function contents */ },
  cat   : function() { /* Function contents */ },
  food  : function() { /* Function contents */ },
  …
}

hello[variable]();

answered Jan 10, 2013 at 17:43

Marco

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