ASP.NET jQuery attr()和prop()方法应用举例---实现选择与交换

①Default.aspx文件

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title></title>
    <script src="jquery.js" type="text/javascript"></script>
    <style type="text/css">
        #pic1
        {
            height: 211px;
            width: 224px;
        }
        #pic2
        {
            height: 213px;
            width: 216px;
            margin-top: 0px;
        }
    </style>
</head>

<body>
    <form id="form1" runat="server">
   <div>
        <img id="pic1" src="images/1.jpg" />&emsp;
        <img id="pic2" src="images/2.jpg" /><br/>
        <hr />
        <input type="checkbox" name="goods" value="商品1" /> 商品1
        <input type="checkbox" name="goods" value="商品2" /> 商品2
        <input type="checkbox" name="goods" value="商品3" /> 商品3
        <input type="checkbox" name="goods" value="商品4" /> 商品4<br />
        <hr />
        <input type="button" value="交换图片" οnclick="changepic()" />
        <input type="button" value ="全选" οnclick="selectall()" />
        <input type="button" value ="反选" οnclick="reselect()" />
        <input type="button" value ="全选并禁用" οnclick="disselect()" />
        <input type="button" value ="取消禁用" οnclick="enable()" />
    </div>  

      
      <script type="text/javascript">
          function changepic() {
              var picsrc = $("#pic1").attr("src");
              if (picsrc.indexOf("1.jpg") != -1) {
                  $("#pic1").attr("src", "images/2.jpg");
                  $("#pic2").attr("src", "images/1.jpg");
              }
              else {
                  $("#pic1").attr("src", "images/1.jpg");
                  $("#pic2").attr("src", "images/2.jpg");
              }
          }
          function selectall() {
              $("input[type='checkbox']").prop("checked", true);
          }
          function reselect() {
              $("input[type='checkbox']").prop("checked", function (index, oldval) { return !oldval; });
          }
          function disselect() {
              $("input[type='checkbox']").prop({ checked: true, disabled: true });

          }
          function enable() {
              $("input[type='checkbox']").attr("disabled", false);

          }
      </script>
    </form>
</body>
</html>

②效果图及说明：
Ⅰ.交换

在这里插入图片描述