1:性能
stackflow:http://stackoverflow.com/questions/1910794/what-is-the-difference-between-jquery-text-and-html
demo:http://jsfiddle.net/PhJNX/
.html() is ~2x faster than .text()..innerHTML is ~3x faster than .html()..nodeValue is ~50x faster than .html(), ~100x than .text(), and ~20x than .innerHTML.2:安全
stackflow:http://stackoverflow.com/questions/9735045/is-jquery-text-method-xss-safe
demo:http://jsfiddle.net/TLu69/
$().text()更安全
原文：http://www.cnblogs.com/xnlc/p/4921933.html