jQuery attr removeAttr 属性操作
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; %> <!DOCTYPE html> <html> <head> <base href="<%=basePath%>"> <meta charset="UTF-8"> <title>b index</title> <link rel='stylesheet' type="text/css" href='b/css/bootstrap.css'> </head> <body style="margin:150px;"> <div id="div001">div001</div> <div id="div002">div002</div> <div id="div003">div003</div> <div> <button id="btn001">click me to use attr set string attr</button> <button id="btn002">click me to use attr get attr</button> <button id="btn003">click me to use attr set obj attr</button> <button id="btn004">click me to use removeAttr string</button> <button id="btn005">click me to use removeAttr obj</button> <button id="btn006">click me to use attr set fn attr</button> </div> <script type="text/javascript" src="js/jquery-1.11.1.js"></script> <script type="text/javascript" src="b/js/bootstrap.js"></script> <script type="text/javascript" src="js/index031.js"></script> </body> </html>
$(function() { $('#btn001').click(btn001Click); $('#btn002').click(btn002Click); $('#btn003').click(btn003Click); $('#btn004').click(btn004Click); $('#btn005').click(btn005Click); $('#btn006').click(btn006Click); }); function btn001Click() { $('#div001').attr('a', 'a'); } function btn002Click() { // 如果没有设置a属性，会得到undefined； var string = $('#div001').attr('a'); console.log(string); } function btn003Click() { var obj = { 'a' : 'a', 'b' : 'b' }; $('#div001').attr(obj); } function btn004Click() { // 必须有输入参数，否则没有效果； $('#div001').removeAttr(); // 输入'a','b'只会删除'a'的属性；输入['a','b']会报错； $('#div001').removeAttr('a', 'b'); } function btn005Click() { var obj = { 'a' : 'a', 'b' : 'b' }; // 输入一个对象会报错的； try { $('#div001').removeAttr(obj); } catch (e) { console.log(e); } } function btn006Click() { $('#div002').attr('title', function() { // return this.id; // 这样也是可以的；返回一个字符串就可以了； return 'asdf'; }); }
var ids=$('div').attr('id');
得到的是第一个元素的id，还不是所有元素的id；
prop也是获得第一个元素的id；