I'm with you there.
You know how I love to simplify code. If I learned that you didn't have to
say .length to get the length, then the very next thing I'd do would be to
try to simplify this code that I write so often:
var $foo = $('.foo');
if( $foo.length ) {
// got some elements
}
by changing it to:
var $foo = $('.foo');
if( $foo ) {
// got some elements
}
:-(
Ah well, nice idea, wasn't it. :-)
-Mike
p.s. Too bad there's no .booleanOf() or .toBoolean() method in JavaScript -
then we could do this right!
_____
From: John Resig
I'm hesitant to add that (I've definitely thought about it, in the past)
because .valueOf() doesn't cover all comparison cases.
obj > obj2 works (as you noted)
but if ( obj ) {} doesn't (it always returns true)
Additionally, in Firebug, the result shows up as a number rather than
something more useful (like a list of elements).
--John
On Thu, Jul 23, 2009 at 2:06 PM, James Padolsey
<[email protected]> wrote:
Just a thought; this would be quite useful IMO:
var paras = $('p'), uls = $('ul');
if (paras > uls) {
// ...
}
I know it's not quite as readable (or as semantic) as:
if (paras.length > uls.length) {
// ...
}
but still, it's one of those things that may as well be added, just
for the few situations where it may be useful.
jQuery.fn.valueOf = function(){return this.length;};
Unless it's got some other valid use (with jQuery)...?
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