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<meta charset="utf-8">
<title>Fmpq教程(fmpq.com)</title>
<script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js">
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<script>
$(document).ready(function(){
$("li").click(function(){
alert($(this).index());
});
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<p>点击获取列表项的索引位置,相对于它的兄弟元素</p>
<ul>
<li>Coffee</li>
<li>Milk</li>
<li>Soda</li>
</ul>
</body>
</html>