Typeahead.js未显示建议

Question

我正在尝试为输入框进行预编。我正在使用typeahead.js。我正在使用相同的代码来学习此功能。虽然我没有收到任何错误，但它并没有显示建议。我还包括了所有需要的脚本，如下所示：

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-3-typeahead/4.0.2/bootstrap3-typeahead.min.js"></script>  
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" />  
<script src="the-basics.js"></script>

Html如下：

<div class="container">
<div id="the-basics">
<input class="typeahead" type="text" placeholder="States of USA">
</div>
</div>

js如下：

var substringMatcher = function(strs) {
console.log('strs', strs);
return function findMatches(q, cb) {
console.log('q', q);
var matches, substringRegex;
// an array that will be populated with substring matches
matches = [];
console.log('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)) {
matches.push(str);
}
});

console.log('matches', matches);
cb(matches);
};

};

var states = ['Alabama', 'Alaska', 'Arizona', 'California',
'Colorado', 'Connecticut', 'Delaware', 'Florida'
];

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

请帮我解决这个问题。

PS：我已经尝试了StackOverflow上的不同解决方案，但它对我不起作用。

Answer 1

const states = [
"Alabama",
"Alaska",
"Arizona",
"California",
"Colorado",
"Connecticut",
"Delaware",
"Florida"
];
$("#the-basics .typeahead").typeahead({
hint: true,
highlight: true,
minLength: 1,
name: "states",
source: states
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-3-typeahead/4.0.2/bootstrap3-typeahead.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" />

<div class="container">
<div id="the-basics">
<input class="typeahead" type="text" placeholder="States of USA" autocomplete="off">
</div>
</div>