On Sep 5, 6:32 am, "Jörn Zaefferer" <[EMAIL PROTECTED]>
wrote:
> Yes, but every other implementation does that,
No, they don't. In Firerfox 2 and 3 (and perhaps in earlier versions)
properties added to the window object are returned in reverse
order[1], in Opera 7 properties added to native objects were returned
in alphabetical order.
> so a lot of code
> implicitly relies on this.
Then it is bad code.
> You don't really expect programmers to read
> language specs, do you?
Yes, though simply reading it cover-to-cover is pointless. They
should at least know enough about it to be able to find, read and
understand relevant sections where required.
How programmers learn a language is up to them, but they should at
least be aware of such fundamental principles.
1. Some play code, try it in Firefox and some other browser:
<div id="xx"></div>
<script type="text/javascript">
function foo(obj) {
var props = {alpha:'alpha', gamma:'gamma',
delta:'delta', beta:'beta'};
for (var p in props) {
obj[p] = props[p];
}
var x = [];
for (p in obj){
if (p in props){
x.push(p);
}
}
return x;
}
window.onload = function(){
document.getElementById('xx').innerHTML = foo(this).join('<br>');
}
</script>
--
Rob
