一、动态加载CSS
动态创建css样式有两种方式:
1、动态插入css外部文件的方法:
function loadStyle(url){
var link = document.createElement(‘link‘);
link.type = ‘text/css‘;
link.rel = ‘stylesheet‘;
link.href = url;
var head = document.getElementsByTagName(‘head‘)[0];
head.appendChild(link);
}
loadStyle(‘test.css‘);
2、动态加载css代码片段
function loadCssCode(code){
var style = document.createElement(‘style‘);
style.type = ‘text/css‘;
style.rel = ‘stylesheet‘;
try{
//for Chrome Firefox Opera Safari
style .appendChild(document.createTextNode(code));
}catch(ex){
//for IE
style.styleSheet.cssText = code;
}
var head = document.getElementsByTagName(‘head‘)[0];
head.appendChild(style);
}
loadCssCode(‘body{background-color:#f00}‘);
二、动态加载js
1、异步加载,并加载到前台资源库
function loadJsCallback(sid, jsurl, callback) {
var nodeHead = document.getElementsByTagName(‘head‘)[0];
var urlStr = jsurl.split(‘,‘);
if(document.getElementById(sid + "JS0") == null){
var urlLength = urlStr.length;
for(var i = 0; i < urlStr.length; i++){
var nodeScript = document.createElement(‘script‘);
nodeScript.setAttribute(‘type‘, ‘text/javascript‘);
nodeScript.setAttribute(‘src‘, urlStr[i]);
nodeScript.setAttribute(‘id‘, sid + ‘JS‘ + i);
if(callback != null){
nodeScript.onload = nodeScript.onreadystatechange = function(curTarget) {
if(nodeScript.ready){
return false;
}
if(!nodeScript.readyState || nodeScript.readyState == "loaded"
|| nodeScript.readyState == ‘complete‘){
urlLength -= 1;
if(0 != urlLength){
return false;
}else{
nodeScript.ready = true;
callback();
}
}
};
}
nodeHead.appendChild(nodeScript);
}
}else{
if(callback != null){
callback();
}
}
}