無法驗證後AJAX加載內容量

Question

這是我的例子：

$.ajax({ 
    type: "POST", 
    url: "some.php", 
    data: "fname=John&lname=Due", 
    success: function(result){ 
     $('#content').html('Label 1: <input name="quantity[]" class="quantity"> Label 2: <input name="quantity[]" class="quantity">'); 
    } 
}); 

和JS驗證數量

$(".quantity").keydown(function (e) { 
     // Allow: backspace, delete, tab, escape, enter and . 
     if ($.inArray(e.keyCode, [46, 8, 9, 27, 13, 110]) !== -1 || 
      // Allow: Ctrl+A, Command+A 
      (e.keyCode == 65 && (e.ctrlKey === true || e.metaKey === true)) || 
      // Allow: home, end, left, right, down, up 
      (e.keyCode >= 35 && e.keyCode <= 40)) { 
      // let it happen, don't do anything 
      return; 
     } 
     // Ensure that it is a number and stop the keypress 
     if ((e.shiftKey || (e.keyCode < 48 || e.keyCode > 57)) && (e.keyCode < 96 || e.keyCode > 105)) { 
      e.preventDefault(); 
     } 
    }); 

Answer 1

.html()是一個函數，其中的參數將被設置爲新html是在調用時傳遞，除非使用.html(function(index, html){})模式，其中在函數回調中新編html爲return;沒有設置爲屬性值爲.innerHTML是。替補

$('#content').html('Label 1: <input name="quantity[]" class="quantity"> Label 2: <input name="quantity[]" class="quantity">'); 

爲

$('#content').html = 'Label 1: <input name="quantity[]" class="quantity"> Label 2: <input name="quantity[]" class="quantity">'; 

---

使用事件代表團附加​​事件動態創建.quantity元素;或創建

元素時附上事件

function handleKeydown(e) { 
     // Allow: backspace, delete, tab, escape, enter and . 
     if ($.inArray(e.keyCode, [46, 8, 9, 27, 13, 110]) !== -1 || 
      // Allow: Ctrl+A, Command+A 
      (e.keyCode == 65 && (e.ctrlKey === true || e.metaKey === true)) || 
      // Allow: home, end, left, right, down, up 
      (e.keyCode >= 35 && e.keyCode <= 40)) { 
      // let it happen, don't do anything 
      return; 
     } 
     // Ensure that it is a number and stop the keypress 
     if ((e.shiftKey || (e.keyCode < 48 || e.keyCode > 57)) && (e.keyCode < 96 || e.keyCode > 105)) { 
      e.preventDefault(); 
     } 
    } 

$('#content') 
.html('Label 1: <input name="quantity[]" class="quantity"> Label 2: <input name="quantity[]" class="quantity">') 
.find(".quantity") 
.keydown(handleKeydown); 

Answer 2

html的是一個方法，你無法指定所以按照這樣的參考http://api.jquery.com/html/

$('#content').html('Label 1: <input name="quantity[]" class="quantity"> Label 2: <input name="quantity[]" class="quantity">'); 

Answer 3

正如其他人所說，你必須使用HTML（）功能正常。順便說一句，如果你曾經動態地創建html內容，那麼你也必須綁定這些事件。

$.ajax({ 
    type: "POST", 
    url: "some.php", 
    data: "fname=John&lname=Due", 
    success: function(result){ 
     $('#content').html = 'Label 1: <input name="quantity[]" class="quantity"> Label 2: <input name="quantity[]" class="quantity">'; 

     $(".quantity").unbind("keydown").bind("keydown", function() { 
      // your validation code should goes here 
     }); 
    } 
});