为 jQuery-UI 1.8.1 添加自动填充功能

Question

这是我目前拥有的，不幸的是我似乎无法弄清楚如何让autoFill 与 jQuery-UI 一起使用...它曾经与直接的 Autocomplete.js 一起使用

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.1/jquery-ui.min.js" type="text/javascript"></script>
<script src="http://jquery-ui.googlecode.com/svn/tags/latest/external/jquery.bgiframe-2.1.1.js" type="text/javascript"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.1/i18n/jquery-ui-i18n.min.js" type="text/javascript"></script>

<script language="javascript" type="text/javascript">


    var thesource = "RegionsAutoComplete.axd?PID=3"
    $(function () {
        function log(message) {
            $("<div/>").text(message).prependTo("#log");
            $("#log").attr("scrollTop", 0);
        }

        $.expr[':'].textEquals = function (a, i, m) {
            return $(a).text().match("^" + m[3] + "$");
        };

        $("#regions").autocomplete({
            source: thesource,
            change: function (event, ui) {
                //if the value of the textbox does not match a suggestion, clear its value
                if ($(".ui-autocomplete li:textEquals('" + $(this).val() + "')").size() == 0) {
                    $(this).val('');
                }
                else {
                    //THIS IS CURRENTLY NOT "LOGGING" THE "UI" DATA
                    //IF THE USER DOES NOT EXPLICITLY SELECT
                    //THE SUGGESTED TEXT
                    //PLEASE HELP!!!
                    log(ui.item ? ("Selected: " + ui.item.value + " aka " + ui.item.id) : "Nothing selected, input was " + this.value);
                }
            }
        }).live('keydown', function (e) {
            var keyCode = e.keyCode || e.which;
            //if TAB or RETURN is pressed and the text in the textbox does not match a suggestion, set the value of the textbox to the text of the first suggestion
            if ((keyCode == 9 || keyCode == 13) && ($(".ui-autocomplete li:textEquals('" + $(this).val() + "')").size() == 0)) {
                $(this).val($(".ui-autocomplete li:visible:first").text());
            }
        });
    });


</script>

我在后端的 JSON 是这样的

[
    { "label": "Canada", "value": "Canada", "id": "1" },
    { "label": "United States", "value": "United States", "id": "2" },
]

我已使用答案 here 来使 mustMatch 正常工作，但不幸的是，如果我从输入框“tab”离开，或者我完全键入单词而不是实际选择建议的文本，我会得到“Nothing” selected" 响应而不是值和 ID。

有谁知道当您没有实际选择字段时如何从自动完成中提取 id？

---

基本上，我正在寻找的是类似于在此处找到的 Month (local): 示例：http://jquery.bassistance.de/autocomplete/demo/

但显然使用 jQuery-UI 而不是 jquery.autocomplete.js

Answer 1

自动填充的 JQuery UI 版本中已弃用 AutoFill，不再支持 jquery.autocomplete 插件。

Here is a link to a github solutiuon. 如果您跳出该字段，这将自动选择列表中的第一项，并将“selectFirst: true”设置为您的自动完成调用的选项。

(function( $ ) {

$( ".ui-autocomplete-input" ).live( "autocompleteopen", function() {
    var autocomplete = $( this ).data( "autocomplete" ),
        menu = autocomplete.menu;

    if ( !autocomplete.options.selectFirst ) {
        return;
    }

    menu.activate( $.Event({ type: "mouseenter" }), menu.element.children().first() );
});

}( jQuery ));

Answer 2

如果您只是想自动填充，这是我正在使用的代码。

$("#regions").autocomplete({
        source: thesource
    }).live('keydown', function (e) {
        var keyCode = e.keyCode || e.which;
        //if TAB or RETURN is pressed set the value of the textbox to the text of the first suggestion
        if ((keyCode == 9 || keyCode == 13) && $(".ui-autocomplete").is(":visible")) {
            $(this).val($(".ui-autocomplete li:visible:first").text());
        }
    });

Answer 3

演示： http://jsbin.com/akile3

更新 2： 支持 TAB！ ;)

演示： http://jsbin.com/akile3/8

试试这样的：

不确定是不是你想要的，反正如果匹配的话它会自动填充整个单词！

$(function() {
 var json_source = [
        { "label": "Canada", "value": "Canada", "id": "1" },
        { "label": "United States", "value": "United States", "id": "2" }];

    $('<span id="hold"></span>').insertAfter('#regions');
    var $text_was = $('#hold');
    var $log = $('#log');

    $("#regions").autocomplete({
        minLength: 3,
        source: json_source,
        open: function(event, ui) {
            var first_option = $('.ui-autocomplete li:eq(0) a').text();
            $(this).text(first_option);
            $text_was.text(first_option);
        },
        change: function(event, ui) {
          var prev_text = $text_was.text() ? $text_was.text() : json_source[0].value ;
            $log.empty();
            var message = (prev_text != this.value) ? 
            'Nothing selected, input was ' + prev_text : 
            'Selected: ' + ui.item.value + ' aka ' + ui.item.id;
            if (prev_text != this.value) 
              $(this).val( prev_text  );

            $log.append(message);
        },
        select: function(event, ui) {
            $text_was.text(ui.item.value);
            $(this).blur();
        }
    }).blur(function(){
      if( this.value == '' )
     $(this).autocomplete('search', json_source[0].value );
    return false;
  });
});​