不使用eval调用函数？

Question

I have an object attached as data to a DIV. I also have a string that contains the name of a function of that object.

function callFunction(divId, funcName, data) {
  o = $(divId).data('myObject');
  // how do I call o.funcName(data) ???

// Somewhere else...
callFunction('#myDivId', "myFunction", someData);

The divId and funcName are actually coming from a Java applet on the page, which is why they're strings.

Answer 1

Assuming it is a global function:

window['foo']()

is the same as to

foo()

Answer 2

Depends on your functions scope. It it's attached to the window, you can do this;

<script>
    var my_dynamic_function = function(param) {
        alert(param);
    };

    var callFunction = function(divId, funcName, data) {
        ...
        window[funcName]('PARAM!');
    };

    ...

    callFunction('#myDivId', 'my_dynamic_function', data);
</script>