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another way to replace for(var key in o) ?

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Jun 09.2012

Is code of [B]for(var key in o)[/B] only way to enumerate properties of object o?

Is there [B]second way[/B] for enumerating properties of object o?

Thanks.

.

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JavaScript

3 Comments(s) ↴

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@MarPloJun 09.2012 — Hi,

There is also [b]for each (variable in object)[/b].

It works the same way as "for .. in" , but instead of iterating over an objects property names, it iterates over the property values.

Example:
<script type="text/javascript"><!--
var obj = {apple:100, bool:false, astring:"www.coursesweb.net"};
for each (item in obj) {
document.write(item + '<br />');
}
--></script>
Result:
78
false
www.coursesweb.net
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@rnd_meJun 10.2012 — [CODE]var o={a:1,b:2,c:3};

function dump(key, index){
return key + "= " +o[key];
}

alert(
Object.keys(o).map(dump).join("n")
);[/CODE]
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@rnd_meJun 10.2012 — 
There is also [b]for each (variable in object)[/b][/QUOTE]

according to who?
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