Concatenate jquery variable with string

Question

I am caching a selector into a jquery variable, like so:

var elem = $('.wrapper');

I want to perform different queries on the variable according to certain properties. gt(0), :visible, :hidden etc.

By my reckoning, it should look like this:

var elemHidden = $(elem+':hidden');

Of course this is not working. I am assuming it is simple, or something quite close to the code I have.

Here is some HTML:

<div class="wrapper">Wrapper 1</div>
<div class="wrapper">Wrapper 2</div>
etc..

epascarello · Accepted Answer · 2015-09-17 14:36:02Z

3

You can not concatenate a jQuery object and a string. You want to use filter to reduce the set.

var elemHidden = elem.filter(':hidden');

answered Sep 17, 2015 at 14:36

epascarello

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Comments

mvpasarel · Accepted Answer · 2015-09-17 14:38:36Z

1

You should use the $.is() method:

elem.is(':hidden');
elem.is(':visible');
elem.is(':checked');

And for other specific methods as $.gt()

elem.gt(0); or $(elem).gt(0)

answered Sep 17, 2015 at 14:38

mvpasarel

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The is method is is going to return a boolean, I do not think that is what OP wants.

Thank you. This method does work. Or it did in the code I was testing at least.