Javascript function who return length of html?

Using Javascr开发者_StackOverflow中文版ipt, is there a way that I can determine the size of a document excluding any markup?

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I think what you want is something like $(document).text().length. It's not going to be completely exact, but it's going to be a good aproximation.

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Here it is:

document.body.innerHTML.replace(/<[^>]*>/g, '').length