jQuery UI Autocomplete v1.8.14 多词搜索+高亮功能

Question

我正在尝试使用jQuery UI Autocomplete v1.8.14实现两件事:

1) 使用空格分隔的单词搜索所有匹配项(与顺序无关): (例如 搜索 "some heart"，匹配 "win the heart of someone")

2) 高亮显示所有匹配项: (例如 搜索 "some heart"，匹配 "win the heart of some one")

此问题已被多次提出，但我无法找到简单、可重现的代码来展示正确的实现。

我已经开始了JS Fiddle：http://jsfiddle.net/KywMH/2/。如果可能，请以可重现的代码形式回答。

谢谢。

- jmm

Answer 1

下面的解决方案通过以下两种方式解决了这两个问题：

1）修改自动完成源函数

2）修改.data('autocomplete')._renderItem

可以在这里找到一个可工作的JS Fiddle：http://jsfiddle.net/W8MKt/7/ 欢迎对代码或解决方案提出任何批评意见。

谢谢。

<div class="ui-widget">
<label for="tags">Multi-word search: </label>
<input id="tags">
</div>

$(function() {
    var availableTags = [
        "win the day",
        "win the heart of",
        "win the heart of someone"
    ];

    $( "#tags" ).autocomplete({
        source: function(request, response) {

            var aryResponse = [];
            var arySplitRequest = request.term.split(" ");

            for( i = 0; i < availableTags.length; i++ ) {

                var intCount = 0;
                for( j = 0; j < arySplitRequest.length; j++ ) {

                    regexp = new RegExp(arySplitRequest[j]);

                    var test = availableTags[i].match(regexp);

                    if( test ) {

                        intCount++;

                    } else if( !test ) {

                    intCount = arySplitRequest.length + 1;

                    }

                    if ( intCount == arySplitRequest.length ) {

                        aryResponse.push( availableTags[i] );

                    }
                };
            }

            response(aryResponse);

        }

    }).data('autocomplete')._renderItem = function( ul, item ) {

        var srchTerm = $.trim(this.term).split(/\s+/).join ('|');

        var strNewLabel = item.label;

            regexp = new RegExp ('(' + srchTerm + ')', "ig");

            var strNewLabel = strNewLabel.replace(regexp,"<span style='font-weight:bold;color:Blue;'>$1</span>");

      return $( "<li></li>" )
          .data( "item.autocomplete", item )
          .append( "<a>" + strNewLabel + "</a>" )
          .appendTo( ul );

   };

});

- jmm

---

尝试搜索 win t。我认为你会发现一个问题。 - Brock Adams

恭喜您发布了新版本，修复了标签搜索问题。但是IE 9以下的版本存在问题，它们不支持trim()函数的字符串版本。您需要使用jQuery版本的该函数。 - Brock Adams

以上的代码能否适用于远程源（PHP），并在每次按键时将结果检索到数组中？ - iltdev

Answer 2

以下是一种方法：在 jsFiddle 上查看演示。

var availableTags = [
    "win the day",
    "win the heart of",
    "win the heart of someone"
];
var autoCompNodeId  = 'tags';

$( "#" + autoCompNodeId ).autocomplete ( {
    source: function (requestObj, responseFunc) {
                var matchArry   = availableTags.slice (); //-- Copy the array
                var srchTerms   = $.trim (requestObj.term).split (/\s+/);

                //--- For each search term, remove non-matches.
                $.each (srchTerms, function (J, term) {
                    var regX    = new RegExp (term, "i");
                    matchArry   = $.map (matchArry, function (item) {
                        return regX.test (item)  ?  item  : null;
                    } );
                } );

                //--- Return the match results.
                responseFunc (matchArry);
            },

    open:   function (event, ui) {
                /*--- This function provides no hooks to the results list, so we have to trust the
                    selector, for now.
                */
                var resultsList = $("ul.ui-autocomplete > li.ui-menu-item > a");
                var srchTerm    = $.trim ( $("#" + autoCompNodeId).val () ).split (/\s+/).join ('|');

                //--- Loop through the results list and highlight the terms.
                resultsList.each ( function () {
                    var jThis   = $(this);
                    var regX    = new RegExp ('(' + srchTerm + ')', "ig");
                    var oldTxt  = jThis.text ();

                    jThis.html (oldTxt.replace (regX, '<span class="srchHilite">$1</span>') );
                } );
            }
} );

由于旧的高亮功能已不再可用，我们使用“open”事件来突出显示搜索词。请特别注意不要在标签内部进行突出显示。

- Brock Adams

Answer 3

我发现使用内置的自动完成过滤器来减少搜索空间同样有效（而且更简单）：

source: function( request, response ) {
    var searchspace = availableTags;
    // split by space or however you want to split up your search phrase into terms
    var searchwords = request.term.split(" ");

    $.each(searchwords, function() {
        searchspace = $.ui.autocomplete.filter(searchspace, this);
    });

    // in case you don't want to return the whole thing, if your searchspace is large
    var mySlice = searchspace.slice(0, 10);
        response(mySlice);
    },
}

- Aaron Moronez

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谢谢，伙计！这非常有帮助！ - Despertaweb