$(document).ready(function() {
alert("!@221212121212");
});
window.onload = function(){
alert("!@22245624562621212");
}
function
init(){
alert("!@54464564562");
};
</script>
</head>
<body onload="init();">
原文：http://www.cnblogs.com/dk18stone/p/3729608.html