前端面试题
1.xmlhttp.setRequestHeader("requestName", "roboce");
should place before xmlhttp.open();
2.getElementsByClassName
3.#!--->google SEO
出处:http://cnblogs.com/daishuguang
1.xmlhttp.setRequestHeader("requestName", "roboce");
should place before xmlhttp.open();
2.getElementsByClassName
3.#!--->google SEO