JavaScript equivalent of PHP nl2br() function

Standard
function nl2br(str, is_xhtml) {
	var breakTag = (is_xhtml || typeof is_xhtml === 'undefined') ? '<br />'	: '<br>';
	return (str + '').replace(/([^>\r\n]?)(\r\n|\n\r|\r|\n)/g, '$1' + breakTag	+ '$2');
}
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