加載順序
;(function(){}()); > $(function()function()） > window.onload
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script src="js/jquery.js"></script>
<div id="id" class="id">測試</div>
<script>
window.onload = function(){
var id = document.getElementById("id");
console.log(id.innerHTML+"---2");
}
;(function(window){
console.log("屏幕款度：" + window.innerWidth + "、高度：" + window.innerHeight)
var id = document.getElementById("id");
console.log(id.innerHTML+"---1");
}(window));
$(function(){
var id = document.getElementById("id");
console.log(id.innerHTML+"---3");
})
</script>
</body>
</html>