使用动态添加的元素在 jQuery 中自动完成 [英] AutoComplete in jQuery with dynamically added elements

问题描述

我的要求是当用户在输入字段之一中输入一些字符(最少 3 个)时显示几个选项，这些字符也可能是动态添加的.

My requirement is to show few options when user input some characters (minimum 3) in one of input field which might be added dynamically too.

一开始我无法在页面加载时加载数据，因为数据很大.有一个 ajax 调用来获取过滤后的数据.

I can not load data at page loading at beginning because data is huge. There is an ajax call to get that filtered data.

我遇到的问题是页面加载第 2 行时出现 Expected identifier 错误.那么，您能告诉我下面的代码有什么问题吗?

The issue what I am getting is Expected identifier error on page loading at line# 2. So, could you please tell what is wrong with the below code?

$(document).on('keydown.autocomplete', 'input.searchInput', function() {                
            source: function (request, response) { // Line # 2
            var id = this.element[0].id;

            var val = $("#"+id).val();             
            $.ajax({                     
                    type : 'Get',
                    url: 'getNames.html?name=' + val,
                    success: function(data) {
                        var id = $(this).attr('id');
                        $(this).removeClass('ui-autocomplete-loading'); 
                        response(data);
                    },error: function(data) {
                          $('#'+id).removeClass('ui-autocomplete-loading');  
                    }
                  });
              },
                minLength: 3
            });

推荐答案

如何使用另一种方法:在创建输入时初始化自动完成:

How about using another approach: initialize the autocomplete when you create the input:

$(function() {

  // settings for each autocomplete
  var autocompleteOptions = {
    minLength: 3,
    source: function(request, response) {
      $.ajax({
        type: "GET",
        url: "getNames.html",
        data: { name: request.term },
        success: function(data) {
          response(data);
        }
      });
    }
  };

  // dynamically create an input and initialize autocomplete on it
  function addInput() {
    var $input = $("<input>", {
      name: "search",
      "class": "searchInput",
      maxlength: "20"
    });
    $input
      .appendTo("form#myForm")
      .focus()
      .autocomplete(autocompleteOptions);
  };

  // initialize autocomplete on first input
  $("input.searchInput").autocomplete(autocompleteOptions);
  $("input#addButton").click(addInput);
});

<form id="myForm" name="myForm" method="post">
  <input id="addButton" type="button" value="Add an input" />
  <input name="search" class="searchInput" maxlength="20" />
</form>

jsFiddle with AJAX

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