<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<meta charset="utf-8" />
<script src="jquery-3.3.1.js"></script>
<script>
//将dom对象转换成jquery对象
//var jq = jQuery(document);
var jq = $(document);
</script>
<script>
//不可以重复加载
//window.onload = function () {
// alert('dom onload 1');
//}
//window.onload = function () {
// alert('dom onload 2');
//}
//可以重复加载
//$(document).ready(function () {
// alert('jquery ready 1');
//})
//$(document).ready(function () {
// alert('jquery ready 2');
//})
$(function () {
alert('加载完成');
})
</script>
</head>
<body>
</body>
</html>