javaScript中window.document可以简写成document(即window可以省略)
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>JQuery学习29篇</title>
<link rel="stylesheet" type="text/css" href="inputAndDiv.css">
</head>
<body style="background-color: #CCE8CF;">
<h3 style="color: #cd1636;">JQuery学习29篇</h3>
</body>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
function test(){
var a = window.document.getElementsByTagName('h3')[0].innerHTML;
console.log(a);
//window可以省略
var b = document.getElementsByTagName('h3')[0].innerHTML;
console.log(b);
}
test();
</script>
</html>
