jQuery向父辈遍历的简单方法

2019-11-20 08:57:54

字体：大中小

来源：转载

供稿：网友

通过DOM树可以可容易的访问到html文档中的所有元素

例如向上访问父辈的元素有以下方法

1.parent()方法可以得到所定元素的直接父元素

$("span").parent();得到<span>元素的直接父元素

2.parents()方法得到给定元素的所有父元素

$("span").parents();得到<span>元素的所有父元素

$("span").panents(".text");得到<span>元素的父元素中class="text"的元素

3.parentsUntil()方法得到两个给定元素之间的元素

$("span").parentsUntil(".text");得到<span>元素与class="text"元素之间的所有元素

<!DOCTYPE html><html><head> <meta charset="UTF-8"> <script src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js"></script> <style> .container {  float:left;  margin-left:30px; }.container div {  border:1px solid grey;  margin:15px auto; }.ancestor1-1,.ancestor2-1,.ancestor3-1,.ancestor4-1{  width:150px;  height:150px;} .ancestor1-2,.ancestor2-2,.ancestor3-2,.ancestor4-2{  width:120px;  height:120px;}.ancestor1-3,.ancestor2-3,.ancestor3-3,.ancestor4-3{  width:90px;  height:90px;}.now1,.now2,.now3,.now4{  width:60px;  height:60px;} </style> <script>$(document).ready(function(){$(".now1").parent().css("border-color","red");$(".now2").parents().css("border-color","red");$(".now3").parents(".ancestor3-2").css("border-color","red");$(".now4").parentsUntil(".ancestor4-1").css("border-color","red");}); </script></head><body><div>  <div class="container">    <div class="ancestor1-1"><div class="ancestor1-2"><div class="ancestor1-3"><div class="now1">给定元素</div></div></div></div>  </div>  <div class="container">    <div class="ancestor2-1"><div class="ancestor2-2"><div class="ancestor2-3"><div class="now2">给定元素</div></div></div></div>  </div>  <div class="container">    <div class="ancestor3-1"><div class="ancestor3-2"><div class="ancestor3-3"><div class="now3">给定元素</div></div></div></div>  </div>  <div class="container">    <div class="ancestor4-1"><div class="ancestor4-2"><div class="ancestor4-3"><div class="now4">给定元素</div></div></div></div>  </div></div></body></html>

效果图：