Question

我正在尝试提取特定类的每个项目的每个ID，将其传递给php脚本进行处理，然后将结果返回到项目本身。似乎在大多数情况下都有效，但我会为每个项目获得相同的随机数。

这是jQuery

function loadRenew()
{
    $('.renewItem').each(function(){

         var currentItem = parseInt($(this).attr('id'));

         //$('#loading').css('visibility','visible');   //show the rotating gif animation

         $.ajax({   //create an ajax request
                type: "POST",
                url: "renew.php",
                data: 'barcode='+currentItem,   //with the page number as a parameter
                dataType: "html",   //expect html to be returned
                success: function(msg){

                    if(parseInt(msg)!=0)    //if no errors
                    {
                        $("#"+currentItem).html(msg);   //load the returned html
                        //$('#loading').css('visibility','hidden'); //and hide the rotating gif
                    }
                }

            });

    });
}

和PHP

<?php

if(!$_POST['barcode']) die("0");

$barcode = (int)$_POST['barcode'];

echo 'barcode returned is: ' . $barcode;

?>

我没有得到当前的条形码（currentItem），但是每个div都有相同的随机数。

处理结果示例：

<div class="panel">
   <div class="libcard_title"><b>Title: </b> <span style="font-family: Courier;">     Politics and cinema / Andrew Sarris. <span style="font-weight:     bold;">PN1995.9.P6&nbsp;S2</span> Stacks</span></div>
   <div class="card_info">
      <b>Checked Out: </b> <span style="font-family: Courier;"> 02/05/2014</span> \
      <p><b>Date Due: </b> <span style="font-family: Courier;"> 05/16/2014</span></p>
      <div class="renewItem" id="30291002497476">barcode returned is: 2147483647</div>
   </div>
</div>
<div class="panel">
   <div class="libcard_title"><b>Title: </b> <span style="font-family: Courier;"> The         statics of particles and rigid bodies. <span style="font-weight:     bold;">QA821&nbsp;.H47</span> Stacks</span></div>
   <div class="card_info">
      <b>Checked Out: </b> <span style="font-family: Courier;"> 02/06/2014</span>
      <p><b>Date Due: </b> <span style="font-family: Courier;"> 05/17/2014</span></p>
      <div class="renewItem" id="30291003147765">barcode returned is: 2147483647</div>
   </div>
</div>
<div class="panel">
   <div class="libcard_title"><b>Title: </b> <span style="font-family: Courier;">     Tablets <span style="font-weight: bold;"></span> Reserve</span></div>
   <div class="card_info">
      <b>Checked Out: </b> <span style="font-family: Courier;"> 02/18/2014</span>
      <p><b>Date Due: </b> <span style="font-family: Courier;"> 02/21/2014</span></p>
      <p><b>Fine: <span style="font-family: Courier; color:red;"> $5.00</span></b></p>
      <div class="renewItem" id="30291009878660">barcode returned is: 2147483647</div>
  </div>
</div>
<div class="panel">
   <div class="libcard_title"><b>Title: </b> <span style="font-family: Courier;"> Dog    day afternoon [videorecording] / Warner Bros Pictures ; an Artists Entertainment Complex    product <span style="font-weight: bold;">PN1997&nbsp;.D63 2006</span> Media DVD</span>       </div>
   <div class="card_info">
      <b>Checked Out: </b> <span style="font-family: Courier;"> 02/05/2014</span>
      <p><b>Date Due: </b> <span style="font-family: Courier;"> 02/12/2014</span></p>
      <div class="renewItem" id="30291010328143">barcode returned is: 2147483647</div>
   </div>
</div>

Answer 1

这不是随机数。数字2,147,483,647也是计算中32位有符号整数的最大值。因此，它是声明为＆＃34; int＆＃34;的变量的最大值。

尝试使用字符串。不要将它解析为int值，这应该可以解决问题。

返回多个项目的AJAX结果

1 个答案: