jquery选择器之基本筛选选择器

<html>

.left {
auto;
height: 120px;
}

.left div {
70px;
height: 70px;
padding: 5px;
margin: 5px;
float: left;
background: #bbffaa;
border: 1px solid #ccc;
}

.bottom {
800px;
}

.bottom div,
.bottom span {
display: block;
80px;
height: 80px;
margin: 5px;
background: #bbffaa;
float: left;
font-size: 14px;
}

.bottom .small {
60px;
height: 25px;
font-size: 12px;
background: #fab;
}

</style>

<body>
<h2>基本筛选器</h2>
<h3>:first/:last/:even/:odd</h3>
<div class="left">
<div class="div">
<p>div:first</p>
<p>:even</p>
</div>
<div class="div">
<p>:odd</p>
</div>
<div class="div">
<p>:even</p>
</div>
<div class="div">
<p>:odd</p>
</div>
<div class="div">
<p>:even</p>
</div>
<div class="div">
<p>div:last</p>
<p>:odd</p>
</div>
</div>
<script type="text/javascript">
//找到第一个div
?.css("color", "#CD00CD");
</script>

<script type="text/javascript">
//找到最后一个div
?.css("color", "#CD00CD");
</script>

<script type="text/javascript">
//:even 选择所引值为偶数的元素，从 0 开始计数
?.css("border", "3px groove red");
</script>

<script type="text/javascript">
//:odd 选择所引值为奇数的元素，从 0 开始计数
?.css("border", "3px groove blue");
</script>

<h3>:eq/:gt/:lt</h3>
<div class="left">
<div class="aaron">
<p>:lt(3)</p>
</div>
<div class="aaron">
<p>:lt(3)</p>
</div>
<div class="aaron">
<p>:eq(2)</p>
</div>
<div class="aaron">
</div>
<div class="aaron">
<p>:gt(3)</p>
</div>
<div class="aaron">
<p>:gt(3)</p>
</div>
</div>
<script type="text/javascript">
//:eq
//选择单个
?.css("border", "3px groove blue");
</script>

<script type="text/javascript">
//:gt 选择匹配集合中所有索引值大于给定index参数的元素
?.css("border", "3px groove blue");
</script>

<script type="text/javascript">
//:lt 选择匹配集合中所有索引值小于给定index参数的元素
//与:gt相反
?.css("color", "#CD00CD");
</script>

<h3>:not</h3>
<div class="left">
<div>
<input type="checkbox" name="a" />
<p>Aaron</p>
</div>
<div>
<input type="checkbox" name="b" />
<p>慕课</p>
</div>
<div>
<input type="checkbox" name="c" checked="checked" />
<p>其他</p>
</div>
</div>
<script type="text/javascript">
//:not 选择所有元素去除不匹配给定的选择器的元素
//选中所有紧接着没有checked属性的input元素后的p元素，赋予颜色
?.css("background-color", "#CD00CD");
</script>
</body>

</html>