如何将 jquery ui 自动完成添加到动态创建的元素？

Question

我试图让 jQueryUI AutoComplete 在动态创建的表单输入元素上触发，但它不起作用。我尝试过使用 keyup.autocomplete 和 keydown.autocomplete 作为 $.live() 中的绑定事件，但它绑定到新元素 - 仅限于页面上已有的元素。

尝试此处的代码（尝试在第一个输入中键入“ava”，然后单击“添加输入” " 并在新输入中键入相同的内容）。

JavaScript：

$(function() {
    $("input#addButton").click(function() {
        $("input.searchInput:last").clone(true).appendTo($(this).closest("form"));
        $("input.searchInput:last").val("");

    })

    $("input.searchInput").live("keydown.autocomplete", function() {
        $(this).autocomplete({
            source: [
                "ActionScript",
                "AppleScript",
                "Asp",
                "BASIC",
                "C",
                "C++",
                "Clojure",
                "COBOL",
                "ColdFusion",
                "Erlang",
                "Fortran",
                "Groovy",
                "Haskell",
                "Java",
                "JavaScript",
                "Lisp",
                "Perl",
                "PHP",
                "Python",
                "Ruby",
                "Scala",
                "Scheme"
                ],

            minLength: 2
        });
    })
});

HTML：

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

Answer 1

如果有人仍然需要，当新创建的输入获得焦点时，此代码将触发自动完成：

$('body').on('focus', 'input[name^=\'[new_element]\']', function () {
    $(this).autocomplete({
        source: ["ActionScript", "AppleScript"],
        minLength: 2
    });
});

Answer 2

函数 .live() 现已弃用。

看起来像这样的代码有效：

var options = {
    source: ["ActionScript", "AppleScript"],
    minLength: 2
};
var selector = 'input.searchInput';
$(document).on('keydown.autocomplete', selector, function() {
    $(this).autocomplete(options);
});

Answer 3

这有效：

$(function() {
  var options = {
    source: [
      "ActionScript",
      "AppleScript",
      "Asp",
      "BASIC",
      "C",
      "C++",
      "Clojure",
      "COBOL",
      "ColdFusion",
      "Erlang",
      "Fortran",
      "Groovy",
      "Haskell",
      "Java",
      "JavaScript",
      "Lisp",
      "Perl",
      "PHP",
      "Python",
      "Ruby",
      "Scala",
      "Scheme"
    ],
    minLength: 2
  };

  $("input.searchInput").live("keydown.autocomplete", function() {
    $(this).autocomplete(options);
  });

  var addInput = function() {
    var inputHTML = " <input name='search' value='' class='searchInput' maxlength='20' />";
    $(inputHTML).appendTo("form#myForm");
    $("input.searchInput:last").focus();
  };

  if (!$("form#myForm").find("input.searchInput").length) {
    addInput();
  }

  $("input#addButton").click(addInput);
});

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.8.14/jquery-ui.min.js"></script>
<form id="myForm" name="myForm" method="post">
  <input id="addButton" name="addButton" type="button" value="Add an input" />
</form>