Do you simply want to correct the "this" keyword?
var doSomething = function() {
return function(e) {
e = e || window.event;
this.style.background = '#000';
};
}.call(div);
div.onclick = doSomething;
On Dec 15, 1:03 am, Yu-Hsuan Lai <[email protected]> wrote:
> When I globally invoke a function, the this inside it will refer to window.
> I have read "Good Part" so I know to workaround it by another variable
> "that". But see below example:
>
> I want to append some code to an event handler:
>
> aDiv.onclick = function () {
> var tmpFunc = aDiv.onclick;
> return function () {
> tmpFunc();
> someAnotherFunc();
> }
>
> }();
>
> It almost works well. But if origin onclick contain a this, it will refer to
> window because tmpFunc() is a global invocation.
> I found a solution, but I think it's not clever:
> (If possible I wouldn't like to change origin onclick because it's in
> another file)
>
> aDiv.onclick = function () {
> var tmpFunc = aDiv.onclick;
> var tmpObject = aDiv;
> return function () {
> tmpFunc.apply(tmpObject);
> someAnotherFunc();
> }}();
>
> --
> Lai, Yu-Hsuan
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