CODEWITHSUNDEEP
javascriptjquerydom
shoesel
shoesel

Reputation: 1248

Checking jquery object content

Does anyone know, why jquery behaves like this:

var $test = $(window).add(document).add("body");
$test.is(window) -> false
$test.is(document) -> true
$test.is("body") -> true

How do I find out whether a jquery-object contains the window via "is"?

Upvotes: 4

Views: 58

Answers (1)

mindfullsilence
mindfullsilence

Reputation: 452

var $test = $(window).add(document).add("body");
$test.is(function(index, elements) {
    return this === window;
});

the jQuery "is()" method checks the nodeType of the elements being passed. Document has a nodeType of 9. Body has a nodeType of 1. Window has no nodeType, ergo "undefined" which evaluates to false. To get around this, build your own filtering function as illustrated above.

Upvotes: 1

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