一、语法:
loadscript(url[,callback])
或者
loadscript(settings)
二、settings支持的参数:
url:脚本路径
async:是否异步，默认false(html5)
charset:文件编码
cache:是否缓存，默认为true
success:加载成功后执行的函数，优先执行callback。
三、调用举例:
复制代码 代码如下:
//loadscript(url[,callback])
loadscript(“http://code.jquery.com/jquery.js”);
loadscript(“http://code.jquery.com/jquery.js”,function(){
console.log(1)
});
//loadscript(settings)
loadscript({“url”:”http://code.jquery.com/jquery.js”,”async”:false,”charset”:”utf-8″,”cache”:false});
loadscript({“url”:”http://code.jquery.com/jquery.js”,”async”:false,”charset”:”utf-8″,”success”:function(){
console.log(2)
}});
//或者你可以酱紫：
//loadscript(settings[,callback])
loadscript({“url”:”http://code.jquery.com/jquery.js”,”async”:false,”charset”:”utf-8″},function(){
console.log($)
});
四、源代码:
复制代码 代码如下:
function loadscript(url,callback) {
var head = document.head || document.getelementsbytagname(“head”)[0] || document.documentelement,
script,
options,
if (typeof url === “object”) {
options = url;
url = undefined;
}
s = options || {};
url = url || s.url;
callback = callback || s.success;
script = document.createelement(“script”);
script.async = s.async || false;
script.type = “text/javascript”;
if (s.charset) {
script.charset = s.charset;
}
if(s.cache === false){
url = url+( /\?/.test( url ) ? “&” : “?” )+ “_=” +(new date()).gettime();
}
script.src = url;
head.insertbefore(script, head.firstchild);
if(callback){
document.addeventlistener ? script.addeventlistener(“load”, callback, false) : script.onreadystatechange = function() {
if (/loaded|complete/.test(script.readystate)) {
script.onreadystatechange = null
callback()
}
}
}
}