無法獲得typeahead.js示例來上班

Question

我正在嘗試在typeahead.js上給出的基本示例，但似乎無法正常工作。 我已經包含了jQuery和typeahead文件，它們都包含在呈現的頁面中，但是我不斷收到錯誤消息

Uncaught TypeError: undefined is not a function

在線上

$('#the-basics .typeahead').typeahead({

表示未加載typeahead或jquery。 沒有文件404，它們實際上已加載。 我究竟做錯了什么？

這是我的代碼

<script type="text/javascript" src="/static/js/jquery-1.9.1.js"></script>
<script type="text/javascript" src="/static/js/bootstrap.min.js"></script>
<script type="text/javascript" src="/static/js/typeahead.bundle.min.js"></script>


<script type="text/javascript">
    $(document).ready(function() {
        var substringMatcher = function(strs) {
          return function findMatches(q, cb) {
            var matches, substringRegex;

            // an array that will be populated with substring matches
            matches = [];

            // regex used to determine if a string contains the substring `q`
            substrRegex = new RegExp(q, 'i');

            // iterate through the pool of strings and for any string that
            // contains the substring `q`, add it to the `matches` array
            $.each(strs, function(i, str) {
              if (substrRegex.test(str)) {
                // the typeahead jQuery plugin expects suggestions to a
                // JavaScript object, refer to typeahead docs for more info
                matches.push({ value: str });
              }
            });

            cb(matches);
          };
        };

        var states = ['Alabama', 'Alaska', 'Arizona', 'Arkansas', 'California',
          'Colorado', 'Connecticut', 'Delaware', 'Florida', 'Georgia', 'Hawaii',
          'Idaho', 'Illinois', 'Indiana', 'Iowa', 'Kansas', 'Kentucky', 'Louisiana',
          'Maine', 'Maryland', 'Massachusetts', 'Michigan', 'Minnesota',
          'Mississippi', 'Missouri', 'Montana', 'Nebraska', 'Nevada', 'New Hampshire',
          'New Jersey', 'New Mexico', 'New York', 'North Carolina', 'North Dakota',
          'Ohio', 'Oklahoma', 'Oregon', 'Pennsylvania', 'Rhode Island',
          'South Carolina', 'South Dakota', 'Tennessee', 'Texas', 'Utah', 'Vermont',
          'Virginia', 'Washington', 'West Virginia', 'Wisconsin', 'Wyoming'
        ];

        $('#the-basics .typeahead').typeahead({
          hint: true,
          highlight: true,
          minLength: 1
        },
        {
          name: 'states',
          displayKey: 'value',
          source: substringMatcher(states)
        });
    }); 
</script>

Answer 1

因為演示中有錯別字。 見下文。

    <script type="text/javascript" src="/static/js/jquery-1.9.1.js"></script>
    <script type="text/javascript" src="/static/js/bootstrap.min.js"></script>
    <script type="text/javascript" src="/static/js/typeahead.bundle.min.js"></script>


    <script type="text/javascript">
        $(document).ready(function() {
            var substringMatcher = function(strs) {
              return function findMatches(q, cb) {
                var matches, substringRegex;

                // an array that will be populated with substring matches
                matches = [];

                // regex used to determine if a string contains the substring `q`

                /* TYPO !!==> 
                substrRegex = new RegExp(q, 'i');
                 */

               substringRegex == new RegExp(q, 'i');

                // iterate through the pool of strings and for any string that
                // contains the substring `q`, add it to the `matches` array
                $.each(strs, function(i, str) {
                  if (substrRegex.test(str)) {
                    // the typeahead jQuery plugin expects suggestions to a
                    // JavaScript object, refer to typeahead docs for more info
                    matches.push({ value: str });
                  }
                });

                cb(matches);
              };
            };

            var states = ['Alabama', 'Alaska', 'Arizona', 'Arkansas', 'California',
              'Colorado', 'Connecticut', 'Delaware', 'Florida', 'Georgia', 'Hawaii',
              'Idaho', 'Illinois', 'Indiana', 'Iowa', 'Kansas', 'Kentucky', 'Louisiana',
              'Maine', 'Maryland', 'Massachusetts', 'Michigan', 'Minnesota',
              'Mississippi', 'Missouri', 'Montana', 'Nebraska', 'Nevada', 'New Hampshire',
              'New Jersey', 'New Mexico', 'New York', 'North Carolina', 'North Dakota',
              'Ohio', 'Oklahoma', 'Oregon', 'Pennsylvania', 'Rhode Island',
              'South Carolina', 'South Dakota', 'Tennessee', 'Texas', 'Utah', 'Vermont',
              'Virginia', 'Washington', 'West Virginia', 'Wisconsin', 'Wyoming'
            ];

            $('#the-basics .typeahead').typeahead({
              hint: true,
              highlight: true,
              minLength: 1
            },
            {
              name: 'states',
              displayKey: 'value',
              source: substringMatcher(states)
            });
        }); 
    </script>

Answer 2

從此鏈接更新Typehead js http://cdnjs.cloudflare.com/ajax/libs/typeahead.js/0.10.2/typeahead.bundle.min.js

試試這個代碼

$(document).ready(function () {

    var substringMatcher = function (strs) {
        return function findMatches(q, cb) {
            var matches, substringRegex;

            // an array that will be populated with substring matches
            matches = [];

            // regex used to determine if a string contains the substring `q`
            substrRegex = new RegExp(q, 'i');

            // iterate through the pool of strings and for any string that
            // contains the substring `q`, add it to the `matches` array
            $.each(strs, function (i, str) {
                if (substrRegex.test(str)) {
                    // the typeahead jQuery plugin expects suggestions to a
                    // JavaScript object, refer to typeahead docs for more info
                    matches.push({
                        value: str
                    });
                }
            });

            cb(matches);
        };
    };

    var states = ['Alabama', 'Alaska', 'Arizona', 'Arkansas', 'California',
        'Colorado', 'Connecticut', 'Delaware', 'Florida', 'Georgia', 'Hawaii',
        'Idaho', 'Illinois', 'Indiana', 'Iowa', 'Kansas', 'Kentucky', 'Louisiana',
        'Maine', 'Maryland', 'Massachusetts', 'Michigan', 'Minnesota',
        'Mississippi', 'Missouri', 'Montana', 'Nebraska', 'Nevada', 'New Hampshire',
        'New Jersey', 'New Mexico', 'New York', 'North Carolina', 'North Dakota',
        'Ohio', 'Oklahoma', 'Oregon', 'Pennsylvania', 'Rhode Island',
        'South Carolina', 'South Dakota', 'Tennessee', 'Texas', 'Utah', 'Vermont',
        'Virginia', 'Washington', 'West Virginia', 'Wisconsin', 'Wyoming'];

    $('#the-basics .typeahead').typeahead({
        hint: true,
        highlight: true,
        minLength: 1
    }, {
        name: 'states',
        displayKey: 'value',
        source: substringMatcher(states)
    });
});

DEMO

Answer 3

局部變量必須使用var關鍵字或let關鍵字聲明。

substrRegex = new RegExp(q, 'i');
//to
var substrRegex = new RegExp(q, 'i');