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  • 判断返回的对象是否为空

    用$.isEmptyObject(对象)来判断 空返回true 否则为false

    <%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>Insert title here</title>
    <!-- 引入jquery.js -->
        <script type="text/javascript" src="${pageContext.request.contextPath}/js/jquery-3.3.1.min.js"></script>
    
    <script type="text/javascript">
      $(function () {
                $("#sb").click(function () {
             
               
    		var str = document.getElementById("su");
    		var st=str.value;
    		
    
    		
    		
                $.ajax({
    
    
                    url:"/Home/mail/find",
                    data:{number:st},
                    dataType:"json",
                    success:function (mobile) {
                    console.log($.isEmptyObject(mobile.mobileNumber));
                    console.log(mobile);
                    if(!$.isEmptyObject(mobile.mobileNumber)){//不为空
                    
                         console.log(mobile);
                         var msg = mobile.mobileNumber+"=>"+mobile.mobileArea+"=>"+mobile.mobileType;
                        $("#result").html(msg);
                        
                        }else{
                        
                         $("#result").html("不存在");
                         
                         }
                    
                    }
    
    
    
    
                })
    
    
            })
    
     });
    
    
    </script>
    
    </head>
    <body>
    <form  >
    <input  id="su" type="text" name="number">
    <input id="sb" type="button" value="查询归属地">
    
    </form>
    
    <div id="result"></div>
    </body>
    </html>
    

      

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  • 原文地址:https://www.cnblogs.com/charlypage/p/9021639.html
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