Question

<a id="aHw" href="#" callbackName="helloworld">test</a>
    ...
    <script>
      function helloworld() { alert('hello world'); }
    </script>
     ...

question ; how can i produce callBack to pass another function

    <script>
     ...
    var cbName = $('#aHw').attr('callbackName');

    foo( passfunction );  //How???
    ...
   </script>

    <script> 
    function foo(callBack)
    {
       callBack(); // call hello world.
    }
   </script>

thanks in advance.

Answer 1

Ok. So to have an anchor do something on MouseOver, you’d use this code:

<a id="aHw" href="#" onmouseover="doSomething()">test</a>

You can pass a function to another function this way:

function callSomeFunction( fn )
{
    fn();
}

callSomeFunction( alert );

Or you can pass an anonymous function to the above:

 callSomeFunction( function(){ alert( "Finally! A message!" ); } );

If you’re trying to pass the name of a function as a string (which is a fundamentally bad idea and a terrible risk and hard to debug and DON’T DO IT), then you can use eval:

function callNamedFunction( fn )
{
   eval(fn)()
}

Or you might be able to get away with:

function callNamedFunction( fn )
{
   (window[fn])()
}