Asynchronously load scripts and styles

<SCRIPT> window. onload = function () {loadscripturl ('script/head. JS ') loadscriptcode ('alert ("HAHAHA");'); loadstyleurl('a.css '); var csscode =' # box {Background: Red} '; loadstylecode (csscode );} function loadscripturl (URL) {var script = document. createelement ("script"); script. src = URL; script. type = "text/JavaScript"; document. getelementsbytagname ('head') [0]. appendchild (SCRIPT);} function loadscriptcode (CODE) {var script = document. createelement ("script"); script. type = "text/JavaScript"; script. TEXT = Code; document. getelementsbytagname ('head') [0]. appendchild (SCRIPT);} function loadstyleurl (URL) {var link = document. createelement ('link'); Link. rel = 'stylesheet '; Link. href = 'text/CSS '; Link. href = URL; document. getelementsbytagname ('head') [0]. appendchild (Link);} function loadstylecode (CODE) {var style = document. createelement ('style'); style. type = 'text/CSS '; var box = document. createtextnode (CODE); // style is not supported in earlier ie versions. appendchild (box); document. getelementsbytagname ('head') [0]. appendchild (style) ;}</SCRIPT>

This article from the "Sky sea wide" blog, please be sure to keep this source http://ether007.blog.51cto.com/8912105/1435065