Question

I have some code that is giving me problems.

This one:

    onclick="return my_Check();"

and then this one:

    onclick="my_Check();"

My question is, Isn’t this the same thing?

Answer 1

No, they’re not the same. The browser internally uses the string value of “onclick” attributes to construct a function:

var actualHandler = new Function( "event", attributeValue); // for IE, no "event"

Thus, adding the return keyword means that the handler function will return a value to the browser after it’s completed its work on being called. That’s important if the handler wants to prevent the browser from doing any “native” action in response to the event: it can return false to tell the browser to do nothing.

edit — I got the argument order backwards but it’s fixed now