javascript动态创建script标签及事件一则
[javascript]
function load_script(url, callback){
var head = document.getElementsByTagName('head')[0];
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = url;
script.onload = script.onreadystatechange = function(){
if((!this.readyState || this.readyState === "loaded" || this.readyState === "complete")){
callback && callback();
// Handle memory leak in IE
script.onload = script.onreadystatechange = null;
if ( head && script.parentNode ) {
head.removeChild( script );
}
}
};
// Use insertBefore instead of appendChild to circumvent an IE6 bug.
head.insertBefore( script, head.firstChild );
}
load_script('http://www.xx.com/js/test.js',function(){alert('loaded')});
[/javascript]
