Question

我有一个表单当我在文本字段中输入第10个字符时，表单应自动搜索，但下面的代码正在搜索我在文本字段中输入的每个字符。。。我只希望在完成第10个字符后的结果不是每个字符的每个n。。我使用了onkeyup事件，我将该值设置为10但仍在搜索每个字符的每个n ...请帮助我

<body OnKeyPress="return disableKeyPress(event)">
<section id="content" class="container_12 clearfix" data-sort=true>
    <center><table class='dynamic styled with-prev-next' data-table-tools='{'display':true}' align=center>
        <script>
        function disableEnterKey(e)
        {
            var key;      
            if(window.event)
                key = window.event.keyCode; //IE
            else
                key = e.which; //firefox      

            return (key != 13);
        }

        function showUser(str)
        {

            if (str=="")
            {
                document.getElementById("txtHint").innerHTML="";
                return;
            } 
            if (window.XMLHttpRequest)
            {// code for IE7+, Firefox, Chrome, Opera, Safari
                xmlhttp=new XMLHttpRequest();
            }
            else
            {// code for IE6, IE5
                xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
            }
            xmlhttp.onreadystatechange=function()
            {
                if (xmlhttp.readyState==4 && xmlhttp.status==200)
                {
                    document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
                }
            }
            xmlhttp.open("GET","resdb.php?id="+str,true);
            xmlhttp.send();
        }
        </script>

        <script type='text/javascript'>
        //<![CDATA[ 
        $(window).load(function(){
            $('#id').keyup(function(){
                if(this.value.length ==10)
            });
        });//]]>  

        </script>



        <form id="form" method="post" name="form" >
            <tr><td><p align="center"><font size="3"><b>JNTUH - B.Tech IV Year II Semester (R07)   Advance Supplementary Results - July 2012</b></font></p></td></tr>
            <td><p align="center"><b>Last Date for RC/RV : 8th August 2012</b></p></td>
            <tr><td><p align="center"></b> <input type="text" onkeyup="showUser(this.value)"   onKeyPress="return disableEnterKey(event)" data-type="autocomplete"  data-source="extras/autocomplete1.php" name="id" id="id" maxlength="10" placeholder="Hall-Ticket Number">&emsp;</p></td></tr>
        </form>
    </center>
</table>
<center>
    <div id="txtHint"><b>Results will be displayed here</b></div>
</center>
</body>

Answer 1

这是一个想法，因为您的代码正在运行。这样做吧。首先检查文本字段是否超过10个字符。调用fnc（）onkeyup

function fnc()
 {
  length=document.getElementById("atext").value.length;
  if(length==10)
  {
      callyourajaxfunction()
   }


}

表单搜索Onkeyup事件

1 个答案: