jQuery UI自动搜索以搜索多个字符串

Question

我需要向jQuery UI自动搜索功能添加一些功能。我想要解决的问题是允许用户以任何顺序输入文本，这些文本将在术语列表中进行搜索并显示建议。例如，假设我有以下术语：

the brown cow jumped over the moon
the blue cow watched in horror
the red cow simply laughed 
the green cow got sick at such a sight
the yellow cow lost 5 bucks to the black cow
the black cow smiled at his fortune

If the user types in "the cow", I would expect the autocomplete feature to list all the results.
If I type in "brown moon", I would expect the first result to appear.
If I type in "fortune smiled", the last result would appear.

基本上，此行为允许用户以任何顺序键入任何字符串并获得搜索结果。

我是这么想的。我需要在"open“或"search”事件中添加一个回调函数，并在那里操作结果。到目前为止，我的代码如下：

$(function ()
{
    var data =
    [
        "the brown cow jumped over the moon",
        "the blue cow watched in horror",
        "the red cow simply laughed ",
        "the green cow got sick at such a sight",
        "the yellow cow lost 5 bucks to the black cow",
        "the black cow smiled at his fortune"
    ];

    $(".text-search").autocomplete(
    {
        autoFocus: true,
        source: data,
        delay: 0,
        minLength: 2,
        open: function (e, ui)
        {
            debugger;
            // what should i do here?
        },
        search: function (e, ui)
        {
            debugger;
            // what should i do here?
        }
    });
});

<div class="ui-widget">
    <label for="autocomplete">Autocomplete: </label>
    <input class="text-search">
</div>

Answer 1

我会根据用户输入的文本创建您自己的正则表达式。然后，您可以使用此正则表达式来测试候选列表中的每个项目：

$(".text-search").autocomplete({
    autoFocus: true,
    source: function(request, response) {
        var regexStr = "\\b(" + $.map($.trim(request.term).split(" "), function(term) {
            return $.ui.autocomplete.escapeRegex($.trim(term))
        }).join("|") + ")\\b",
        matcher = new RegExp(regexStr);

        response($.grep(data, function(value) {
            return matcher.test(value.label || value.value || value);
        }));
    },
    delay: 0,
    minLength: 2
});

正则表达式看起来很神秘，但它只是使用交替(|)生成一个表达式。例如，如果您键入brown cow，将生成\b(brown|cow)\b，它将匹配带有"brown“或"cow”的任何字符串。

示例： http://jsfiddle.net/hTfj9/