How can I invoke a function the name of which is stored in a string?

Question

If I have an element on the page like this ...

<span data-function="DoSomething">Click</span>

... and i put this in my page header ...

$(document).ready(function() 
{ 
   $('[data-function]').each(function()
   {
       var fName = $(this).attr('data-function');
       $(this).click(fName);
   });
});

... what goes in place of the comment produce the desired effect of executing the function called "DoSomething".

Note: I no the code above wont work, my question is how to make this work (translate 'DoSomething' in to DoSomething();)

Any ideas guys?

Answer 1

The functions should be available. Try putting them in an Object, like this:

$(document).ready(function() 
{ 
   var fns = {
      DoSomething: function() {/* ... */},
      DoAnotherthing: function() {/* ... */}
   };
   $('[data-function]').each(function()
   {
       var fName = $(this).attr('data-function');
       $(this).click(fns[fName]);
   });
});

Here's a jsfiddle, demonstrating a way to keep everything local to one namespace and assigning handlers based on the data attribute of elements.