Hi!
In a recent project I often needed to copy a jQuery object to save a
subquery without losing the original query. As far as I can see there is
no "official way" to do this so I came up with a small extension function:
$.fn.newQuery = function()
{
var c = $();
c.cur = $.merge([], this.cur);
return c;
}
Usage example:
// I need these queries very often so I want to save the results
// within a variable
$fields = $('input.dynamic, textarea.dynamic, select.dynamic');
$requiredFields = $fields.newQuery().filter('.required');
I'm pretty sure that I will need this function in almost every future
project when I use jQuery. Is there an official way to do this that I
missed?
What I would really like to see in the standard library is that jQuery
objects can be passed to the $() function to obtain a copy:
var $a = $('some.query');
var $b = $($a);
$b.filter('some.criteria'); // Does not affect $a
What do you think about that?
-- Ferdinand
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