Mouse Events on JsFiddle not working?

问题

I've got my fiddle here, but I can't understand why it's not calling my function on the 'onmouseout' event. http://jsfiddle.net/foreyez/Xf6LW/

any ideas?

回答1:

Works fine, you just needed to put the function in the head (or body after the element is in the DOM) of the document.

jsFiddle example

回答2:

It's because the functions you create in the JavaScript panel are not global when you have the onLoad option selected. Your JavaScript gets wrapped in a function.

If you do want them to be global you have to either do what j08961 suggested, by changing that dropdown to say no wrap (body or head) will work

The best solution would be to not set your event handlers from HTML, that's bad practice anyway, then you're not relying on global functions or mixing HTML and JS.

<div id="myDiv">
</div>
document.getElementById('myDiv').onmousemove = function() {
  alert('here');
}

Side note: you should have noticed the error in the console saying that myFunc is undefined or something like it.

回答3:

I think it's cause for jsfiddle, it declares all the javascript AFTER the HTML. The HTML is going to run and look for a myFunc and not find it. Then it's going to load the JS and it won't even run it.

回答4:

Here you can see the changes : jsfiddle.

回答5:

make myFunc as a global function;

I searched my code using firebug and got following generated code.

window.addEvent('load', function() {
    //window.myFunc makes myFunc as a global function
    // It can be accessed from any were inside current window.
   window.myFunc = function myFunc(x)
   {
        alert('yo');
   }
    // function below is not available gloably.
    function myFunct1(){
        alert('yo1');
    }
});

see jsfiddle

来源：https://stackoverflow.com/questions/12413968/mouse-events-on-jsfiddle-not-working

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javascript

jsfiddle