abstract：<!DOCTYPE html><html><head><meta charset="UTF-8"><title>Document</title><script type="text/javascript" src="js/jquery-3.3.1.min.js"
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<script type="text/javascript" src="js/jquery-3.3.1.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$('div').css('background','red');
$('div>ul').css('list-style','none');
$("li:odd").css('color','blue');
$('ul>li:last').css('background','blue');
$('li:first').css('background','pink');
$('li:even').css('color','green');
})
</script>
</head>
<body>
<div>
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
<li>7</li>
</ul>
</div>
</body>
</html>
选择器有常规选择器/顺序选择器/层级选择器/表单属性选择器
Correcting teacher：韦小宝Correction time：2019-01-02 16:33:32
Teacher's summary：写的不错！选择器不管是在js中还是jQuery以及css中都是必须要使用到的！这个必须得好好掌握！