<body> <div id="div1"> <h3>我是标题</h3> </div> <div id="div2"> <p>我是p标签</p> script src="jquery-1.12.4.js"></script> <script> $(function () { //html:相当于innerHTML text:相当于innerText //获取 console.log($("div").html()); //<h3>我是标题</h3> console.log($("p").text()); //我是p标签 //设置 $("div h3").html("<p>我是文本</p>"); $("p").text("我是文本"); }); </script> </body>
<!DOCTYPE html> <html lang="zh-CN"> <head> <meta charset="UTF-8"> <title>Title</title> <style> div { width: 200px; height: 200px; background-color: red; padding: 10px; border: 10px solid #000; margin: 10px; } </style> </head> <body> <div></div> <script src="jquery-1.12.4.js"></script> <script> $(function () { //width与height的用法一样 //获取div的宽度 console.log($("div").css("width")); //设置div的width $("div").css("width", "400px"); $("div").css("height", "400px"); //直接获取到的是数字 //就是获取的width的值 console.log($("div").width()); //width console.log($("div").innerWidth()); //padding + width console.log($("div").outerWidth()); //padding + width + border console.log($("div").outerWidth(true)); //padding + width + border + margin }); </script> </body> </html>