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function alias

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Nov 12.2010

Dont know how many of you know this.. just sharing it

[code=php]<script>
function p(f)
{
var a=this[f];
a();
}

function k()
{
alert(“INSIDE FUNCTION”);
}
</script>
<BODY onload=”p(‘k’)”>
</BODY>
[/code]

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JavaScript

1 Comments(s) ↴

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@KorNov 12.2010 — Big discovery :rolleyes:
<i>
</i>...
var a=[B][COLOR="Blue"]this[/COLOR][/B][f];
...

In those conditions, [B]this[/B] refers the [B]window[/B] global Object. On the other hand, all the global functions are[I] properties [/I]of the[B] window [/B]object, and can be referred as such.
<i>
</i>&lt;script type="text/javascript"&gt;
function k()
{
alert("INSIDE FUNCTION");
}
window['k']()
&lt;/script&gt;
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