parents()方法会查每一个元素的所有祖辈元素?
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | <h2>parents方法()</h2> <div class= "left first-div" > <div class= "div" > <ul class= "level-2" > <!-- A --> <li class= "item-a" >A</li> <!-- B --> <li class= "item-b" >B <ul class= "level-3" > <li class= "item-1" >1</li> <li class= "item-2" >2</li> <li class= "item-3" >3</li> </ul> </li> <!-- C --> <li class= "item-c" >C</li> </ul> </div> <div class= "div" > <ul class= "level-2" > <!-- A --> <li class= "item-a" >A</li> <!-- B --> <li class= "item-b" >B <ul class= "level-3" > <li class= "item-1" >1</li> <li class= "item-2" >2</li> <li class= "item-3" >3</li> </ul> </li> <!-- C --> <li class= "item-c" >C</li> </ul> </div> </div> |
祖辈元素怎么理解,是祖父和父辈元素吗?由里到外开始,第一个红框是 <ul class="level-2">(B层的父辈),第二个红框是<div class="div">(B层的祖父辈),第三个红框<div class="left first-div">(B层的外祖父辈),第四个红框是<body>,最后一个是<html>。红框没看错吧?
我该怎么理解parents()方法?