Fastest method to escape HTML tags as HTML entities?

Question

I\'m writing a Chrome extension that involves doing a lot of the following job: sanitizing strings that might contain HTML tags, by converting

Answer 1

function encode(r) {
  return r.replace(/[\x26\x0A\x3c\x3e\x22\x27]/g, function(r) {
	return "&#" + r.charCodeAt(0) + ";";
  });
}

test.value=encode('How to encode\nonly html tags &<>\'" nice & fast!');

/*
 \x26 is &ersand (it has to be first),
 \x0A is newline,
 \x22 is ",
 \x27 is ',
 \x3c is <,
 \x3e is >
*/

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