dqudtskm49788 2016-05-05 05:54
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使用ajax时php中未定义的索引

My Form page :

<body>  
<head>
        <script src="http://code.jquery.com/jquery-1.9.1.js"></script>
        <script>
        function val()
        {
            var name=document.getElementById("name").value;
            if(name == '')
            {
                alert(name+" is empty");
            }
            else
            {
            var dataString = "name = "+name;
            $.ajax({
                type:"POST",
                url:"hi.php",
                data:dataString,
                cache:false,
                success:function(html){
                    $('#msg').html(html);
                }
            });
            }
        return false;
        }
        </script>

    </head>
<body>
    <form>
        <input type="text" id="name" >
        <br/><br/>
        <input type="submit" value ="submit" onclick="return val()">
    </form>
<p id="msg"></p>
</body>

Here is my hi.php file

<?php
$name = $_POST["name"];
echo "Response : ".$name;
?>

When clicking on submit button it show an error Notice: Undefined index: name in C:\wamp\www\SendEmailAjaxJquery\hi.php on line 2

I don't know where is the error plz help me to find out the error...

Thanks in advance

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3条回答 默认 最新

  • doy51723 2016-05-05 06:04
    关注

    Use this in place of this

    var dataString = "name = "+name;

    change into this

    var dataString = 'name='+ name;

    i have the same case here you will be guided from it.

     <html>
 <head>
  <script type="text/javascript" src="jquery-1.12.3.min.js"></script>
 </head>
 <body>
 <div class="content">
    <input type="text" class="search" id="searchid" placeholder="Search for    people" />
    <div id="result"></div>
 </div>  
 </body> 
 </html>
 <script type="text/javascript">
 $(function(){
  $(".search").keyup(function() 
  { 
    var searchid = $(this).val();
    var dataString = 'search='+ searchid;
    if(searchid!='')
    {
      $.ajax({
      type: "POST",
      url: "result.php",
      data: dataString,
      cache: false,
      success: function(html)
      {
         $("#result").html(html).show();
      }
     });
   }return false;    
   });
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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