除了css()以外，还有获取和设置元素高度、宽度、相对位置等的样式操作方法，语法如下：
高度和宽度示例：
<!DOCTYPE html><html lang="en"><head> ???<meta charset="UTF-8"> ???<meta name="viewport" content="width=device-width, initial-scale=1.0"> ???<meta http-equiv="X-UA-Compatible" content="ie=edge"> ???<title>CSS-DOM操作演示示例</title> ???<style> ?????.hot{ ?????????color: #ff0000; ?????} ?????a{ ?????????color: #000000; ?????????text-decoration: none; ?????} ???</style> ???<!--引入jQuery--> ???<script src="../jquery-3.3.1.js"></script> ???<!--javascript--> ???<script> ???????$(function(){ ???????????// 设置height()和width()都是200 ???????????$("li").find("span").css({"display":"block","border":"1px solid red"}).width(200).height(200); ???????}); ???</script></head><body> ???<img src="ad.jpg" alt="1" /> ???<img src="ad.jpg" alt="2" /> ???<img src="ad.jpg" alt="3" /> ???<ul> ???????<li><a href="#">小米的MI 2手机</a><span class="hot">火爆销售中</span></li> ???????<li><a href="#">苹果iPad mini</a></li> ???????<li><a href="#">三星GALAXY III</a></li> ???????<li><a href="#">苹果iPhone 5s</a></li> ???</ul> ???<input type="button" value="点击按钮" /></body></html>效果：
元素相对位置示例：
<!DOCTYPE html><html lang="en"><head> ???<meta charset="UTF-8"> ???<meta name="viewport" content="width=device-width, initial-scale=1.0"> ???<meta http-equiv="X-UA-Compatible" content="ie=edge"> ???<title>CSS-DOM操作演示示例</title> ???<style> ?????.hot{ ?????????color: #ff0000; ?????} ?????a{ ?????????color: #000000; ?????????text-decoration: none; ?????} ???</style> ???<!--引入jQuery--> ???<script src="../jquery-3.3.1.js"></script> ???<!--javascript--> ???<script> ???????$(function(){ ???????????// 设置height()和width()都是200 ???????????//$("li").find("span").css({"display":"block","border":"1px solid red"}).width(200).height(200); ???????????//offset ???????????$("input[type=‘button‘]").click(function(){ ???????????var x=$("span").offset(); ???????????console.log(x); ???????????$("span").text("横坐标:"+x.left+",纵坐标:"+x.top); ???????????}); ???????}); ???</script></head><body> ???<img src="ad.jpg" alt="1" /> ???<img src="ad.jpg" alt="2" /> ???<img src="ad.jpg" alt="3" /> ???<ul> ???????<li><a href="#">小米的MI 2手机</a><span class="hot">火爆销售中</span></li> ???????<li><a href="#">苹果iPad mini</a></li> ???????<li><a href="#">三星GALAXY III</a></li> ???????<li><a href="#">苹果iPhone 5s</a></li> ???</ul> ???<input type="button" value="点击按钮" /></body></html>效果：
jQuery（十）：CSS-DOM操作
原文地址：https://www.cnblogs.com/dotnet261010/p/9736265.html