![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
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<script type="text/javascript">
$('li').first().css('color','#333333')
$('li').last().css('color','#ff0000')
$('ul').find('li').css('color','#ffff00')
$('ul').children('p').css('color','#655485')
$('li').eq(2).next().css('color','#453333')
$('li').eq(6).prev().css('color','#cc0000')
</script>点击 "运行实例" 按钮查看在线实例
