未捕获的TypeError:无法读取未定义的属性“推" [英] Uncaught TypeError: Cannot read property 'push' of undefined

问题描述

你好，我用jquery生成文本框的每个人都是通过jquery动态生成的.现在的问题是我想在ajax函数中获取文本框的值，然后ajax将此值传递给我提到的其他php页面.当我在文本框上键入文本时，它会提醒我单击提交按钮时输入的值，但它没有将此值传递给其他页面，因为它给出了错误提示:

Hello Everyone I have used jquery to generate a textbox.It is generated dynamically through jquery.Now the problem is i want to fetch the textbox value in ajax function and then ajax pass this value to other php page which i have mentioned.When i type a text on textbox it gives me alert the value which i have type when i click submit button but it did not pass this value to other page because it gives error :

-未被捕获的TypeError:无法读取未定义的属性"push".

-Uncaught TypeError: Cannot read property 'push' of undefined.

我的代码是:- 在第一个脚本中，我习惯于动态生成texbox，在第二个脚本中，我想获取文本框的值并将该值传递给php文件. 在第二个脚本中，我在此行中遇到上述错误
dynamic_text.push($(this).parents("tr").find(".dynamic_text").val())

My code is:- In first script i used to generate texbox dynamically and in second script i want to fetch the value of textbox and pass that value to php file. In second script i have above error in this line
dynamic_text.push($(this).parents("tr").find(".dynamic_text").val())

<script>
  jQuery(function($){  
   $(".select_drop").on('change', function(){
     var $this = $(this),
         selectedType = $this.val();
     if($this.closest('tr').find('.dynamic_text').length == 0) $(this).closest('tr').append("<table><tr><td><form method='post'><input type='text' class='dynamic_text'><td></form></td></tr></table>")
     //if($this.closest('tr').find('.dynamic_text').length == 0) $(this).closest('tr').append("<form method='post'><td><input type='text' class='dynamic_text'></td></form>")
    });
  });
  </script>
<script>
$(document).ready(function(){
$('#submit').click(function(){
  <?php global $store; ?>
             var store= '<?php echo $store; ?>'; 
 var textbox = [];
   var textbox1 = [];
    var check = [];
    //var dynamic_text= $('.dynamic_text').val();
var dynamic_text;
   // alert(dynamic_text);
   $('.check').each(function() {
 if ($(this).is(':checked')) {
               var current = $(this).val();

              //alert(current);
             textbox.push($(this).parents("tr").find(".textbox").val())
             textbox1.push($(this).parents("tr").find(".textbox1").val())
            dynamic_text.push($(this).parents("tr").find(".dynamic_text").val())

         }
  check.push($(this).val());
});

               $.ajax({
             url: 'aj2.php',
             type: 'post',
             data: { check: textbox, store: store, oldval: textbox1,dynamic_text:dynamic_text},
             success:function(data){
              alert(data);
 //alert("Data save!!!");
             }
         });
return false;
});
});
</script>

突出显示错误

推荐答案

这是因为您没有为变量dynamic_text设置值:

This is because you are not setting a value to the variable dynamic_text:

 var dynamic_text;

因此，其值将为undefined.显然，undefined没有.push()方法.那就是错误的意思:

As such it's value will be undefined. And clearly undefined doesn't have a .push() method; that's what the error is saying:

无法读取未定义的属性"push"

Cannot read property 'push' of undefined

您将需要将变量定义为数组:

You will want to define your variable as an array:

var dynamic_text = [];

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