动态创建js脚本和 css样式

//1、动态添加外部js文件function loadScript(url){ ???var script = document.createElement("script"); ???script.type = "text/javacsript"; ???script.src = url; ???document.body.appendChild(script);}//2、动态添加js代码function loadScriptString(code){ ???var script = document.createElement("script"); ???script.type = "text/javascript"; ???try{ ???????script.appendChild(document.createTextNode(code)); ???}catch (e) { ???????script.text = code; ???} ???document.body.appendChild(script);}//3、动态添加外部css文件function loadStyles(url){ ???var link = document.createElement("link"); ???link.type = "text/css"; ???link.rel = "stylesheet"; ???link.href = url; ???var head = document.getElementsByName("head")[0]; ???head.appendChild(link);}//4、动态添加css代码function loadStyleString(css) { ???var style = document.createElement("style"); ???style.type = "text/css"; ???try{ ???????style.appendChild(document.createTextNode(css)); ???}catch (e) { ???????style.styleSheet.cssText = css; ???} ???var head = document.getElementsByTagName("head")[0]; ???head.appendChild(style);}