check if element is inserted on page

Possible Duplicate:
Is there an “exists” function for jQuery

Is there a better way to check if the element is already inserted on page? I'm currently doing this and is working fine, but doesn't seem for me to be the best/fast way

$(element).closest('body').length > 0

Thanks.

Edit:

I doesn't need to know if my element exists, I need to know if it's on page.

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你可以使用jQuery内置的.has功能，所以你的代码应该看起来像这样：

$('body').has(element)

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Try this :

$(element, 'body').size() > 0

It will fetch for the element within the body.

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What you are doing is searching for element "body". It's not what you are looking for

$(element).length > 0

check whether an element exists

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