javascript 未捕获的类型错误：未定义不是函数 - typeahead.js
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时间：2020-10-28 02:43:15 来源:igfitidea点击:
Uncaught TypeError: undefined is not a function - typeahead.js
提问by user3725362
I'm trying to get a a basic typeahead.js exampleto work. The example works if I create it in a separate HTML file as below.
我正在尝试让一个基本的typeahead.js 示例工作。如果我在一个单独的 HTML 文件中创建它，则该示例有效，如下所示。
<html>
<head>
<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 djs = ['Hardwell', 'Armin van Buuren', 'Avicii', 'Tiesto', 'David Guetta',
'Dimitri Vegas & Like Mike', 'Nicky Romero', 'Steve Aoki', 'AfroHyman',
'Dash Berlin', 'Skrillex', 'Deadmau5', 'Alesso', 'W&W', 'Calvin Harris',
'NERVO', 'Above & Beyond', 'Sebastian Ingrosso', 'Axwell', 'Aly & Fila',
'Markus Schulz', 'Daft Punk', 'Headhunterz', 'Zedd', 'Knife Party',
'Swedish House Mafia', 'Showtek', 'Andrew Rayel', 'Fedde Le Grand',
'Dyro', 'Laidback Luke', 'Paul van Dyk', 'ATB', 'Angerfist', 'Dada Life',
'Kaskade', 'Frontliner', 'Steve Angello', 'Sander Van Doorn',
'Martin Garrix', 'Porter Robinson', 'Ferry Corsten', 'Chuckie',
'Krewella', 'Coone', 'Carl Cox', 'Bobina', 'Omnia', 'Orjan Nilsen',
'Zatox', 'Gareth Emery', 'Bingo Players', 'Infected Mushroom',
'Eric Prydz', 'Tommy Trash', 'Wildstylez', 'Arty', 'R3hab', 'Madeon',
'Vicetone', 'Brennan Heart', 'DJ Feel', 'Gunz For Hire', 'Diplo',
'Tenishia', 'Noisecontrollers', 'Mike Candys', 'DJ Antoine',
'Quentin Mosimann', 'Project 46', 'Blasterjaxx', 'D-Block & S-te-Fan',
'Dillon Francis', 'Dannic', 'Adaro', 'Richie Hawtin', 'Martin Solveig',
'Felguk', 'Myon & Shane 54', 'Cosmic Gate', 'Heatbeat', "John O'Callaghan",
'Wasted Penguinz', 'Tiddey', 'Skazi', 'Da Tweekaz', 'Tenashar',
'Bob Sinclar', 'Benny Benassi', 'Stafford Brothers', 'DJ BL3ND',
'Paul Oakenfold', 'Mat Zo', 'Diego Miranda', 'DJs From Mars', 'Matt Darey',
'UMEK', 'Solarstone', 'Ummet Ozcan', 'Ran-D', 'Disclosure', 'Rudimental',
'Flux Pavilion', 'Nero', 'Datsik', 'Moby', 'Zeds Dead', 'The Prodigy',
'Bassnectar', 'Adventure Club', 'Dirty South', 'Borgore', 'Modestep',
'Bonobo', 'Feed Me', 'Flosstradamus', 'The Glitch Mob', 'Rusko',
'Kill The Noise','Fatboy Slim', 'Zomboy', 'A-Trak', 'James Blake',
'Morgan Page', 'The Bloody Beetroots', 'Quintino', 'Wolfgang Gartner',
'Bakermat', 'M83', 'Pretty Lights', 'Cedric Gervais',
'Sunnery James & Ryan Marciano', 'Baauer', 'Danny Avila', 'Justice',
'Seven Lions', 'Royksopp', 'Bondax', 'Zero 7', 'Lemaitre', 'Noisia',
'Gramatik', 'Thomas Gold', 'Basement Jaxx', 'Aphex Twin', 'Four Tet',
'Flying Lotus', 'Sidney Samson', 'Paul Kalkbrenner', 'Boards Of Canada',
'Maya Jane Coles', 'Groove Armada', 'Juan Magan', 'Chase & Status', 'BT',
'Digitalism', 'Mount Kimbie', 'Benga', 'Audien', 'BassHymaners',
'The Chainsmokers', 'DVBBS', 'Pete Tong', 'Deorro', 'DJ Snake',
'Don Diablo', 'Pendulum', 'Chris Lake', 'Dzeko & Torres', 'Zhu'
];
$('#dj-search .typeahead').typeahead({
hint: true,
highlight: true,
minLength: 1
},
{
name: 'djs',
displayKey: 'value',
source: substringMatcher(djs)
});
});
</script>
</head>
<body>
<form id="search_bar" class="navbar-form navbar-left">
<div class="form-group" id="dj-search">
<input type="text" class="form-control typeahead" placeholder="Search favourite DJs" autocomplete="off">
</div>
</form>
</body>
</html>
If I try to get the same code to work for my existing HTML template, I keep on getting the error
如果我尝试使相同的代码适用于我现有的 HTML 模板，我会不断收到错误消息
Uncaught TypeError: undefined is not a function
Uncaught TypeError: undefined is not a function
on the line
在线上
$('#dj-search .typeahead').typeahead({
$('#dj-search .typeahead').typeahead({
What could be causing this error?
什么可能导致此错误？
Below is my full HTML
下面是我的完整 HTML
<!DOCTYPE html>
<html lang="en">
<head>
<title>EDM Hunters | Top 100 DJs | Discover the Best of Electronic Dance Music</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="Listen to, vote on and discover the Top Electronic Dance Music Songs by the Top DJs of the world">
<meta property="og:image" content="/static/img/edmlogo.jpg"/>
<link rel="shortcut icon" href="/static/img/favicon.ico">
<link href="/static/css/bootstrap.min.css" rel="stylesheet" type='text/css'/>
<link href="/static/css/bootstrap-theme.min.css" rel="stylesheet" type='text/css'/>
<link href="/static/css/style.css" rel="stylesheet" type='text/css'/>
<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" src="//s7.addthis.com/js/300/addthis_widget.js#pubid=ra-53a4066858ab24f0"></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 djs = ['Hardwell', 'Armin van Buuren', 'Avicii', 'Tiesto', 'David Guetta',
'Dimitri Vegas & Like Mike', 'Nicky Romero', 'Steve Aoki', 'AfroHyman',
'Dash Berlin', 'Skrillex', 'Deadmau5', 'Alesso', 'W&W', 'Calvin Harris',
'NERVO', 'Above & Beyond', 'Sebastian Ingrosso', 'Axwell', 'Aly & Fila',
'Markus Schulz', 'Daft Punk', 'Headhunterz', 'Zedd', 'Knife Party',
'Swedish House Mafia', 'Showtek', 'Andrew Rayel', 'Fedde Le Grand',
'Dyro', 'Laidback Luke', 'Paul van Dyk', 'ATB', 'Angerfist', 'Dada Life',
'Kaskade', 'Frontliner', 'Steve Angello', 'Sander Van Doorn',
'Martin Garrix', 'Porter Robinson', 'Ferry Corsten', 'Chuckie',
'Krewella', 'Coone', 'Carl Cox', 'Bobina', 'Omnia', 'Orjan Nilsen',
'Zatox', 'Gareth Emery', 'Bingo Players', 'Infected Mushroom',
'Eric Prydz', 'Tommy Trash', 'Wildstylez', 'Arty', 'R3hab', 'Madeon',
'Vicetone', 'Brennan Heart', 'DJ Feel', 'Gunz For Hire', 'Diplo',
'Tenishia', 'Noisecontrollers', 'Mike Candys', 'DJ Antoine',
'Quentin Mosimann', 'Project 46', 'Blasterjaxx', 'D-Block & S-te-Fan',
'Dillon Francis', 'Dannic', 'Adaro', 'Richie Hawtin', 'Martin Solveig',
'Felguk', 'Myon & Shane 54', 'Cosmic Gate', 'Heatbeat', "John O'Callaghan",
'Wasted Penguinz', 'Tiddey', 'Skazi', 'Da Tweekaz', 'Tenashar',
'Bob Sinclar', 'Benny Benassi', 'Stafford Brothers', 'DJ BL3ND',
'Paul Oakenfold', 'Mat Zo', 'Diego Miranda', 'DJs From Mars', 'Matt Darey',
'UMEK', 'Solarstone', 'Ummet Ozcan', 'Ran-D', 'Disclosure', 'Rudimental',
'Flux Pavilion', 'Nero', 'Datsik', 'Moby', 'Zeds Dead', 'The Prodigy',
'Bassnectar', 'Adventure Club', 'Dirty South', 'Borgore', 'Modestep',
'Bonobo', 'Feed Me', 'Flosstradamus', 'The Glitch Mob', 'Rusko',
'Kill The Noise','Fatboy Slim', 'Zomboy', 'A-Trak', 'James Blake',
'Morgan Page', 'The Bloody Beetroots', 'Quintino', 'Wolfgang Gartner',
'Bakermat', 'M83', 'Pretty Lights', 'Cedric Gervais',
'Sunnery James & Ryan Marciano', 'Baauer', 'Danny Avila', 'Justice',
'Seven Lions', 'Royksopp', 'Bondax', 'Zero 7', 'Lemaitre', 'Noisia',
'Gramatik', 'Thomas Gold', 'Basement Jaxx', 'Aphex Twin', 'Four Tet',
'Flying Lotus', 'Sidney Samson', 'Paul Kalkbrenner', 'Boards Of Canada',
'Maya Jane Coles', 'Groove Armada', 'Juan Magan', 'Chase & Status', 'BT',
'Digitalism', 'Mount Kimbie', 'Benga', 'Audien', 'BassHymaners',
'The Chainsmokers', 'DVBBS', 'Pete Tong', 'Deorro', 'DJ Snake',
'Don Diablo', 'Pendulum', 'Chris Lake', 'Dzeko & Torres', 'Zhu'
];
$('#dj-search .typeahead').typeahead({
hint: true,
highlight: true,
minLength: 1
},
{
name: 'djs',
displayKey: 'value',
source: substringMatcher(djs)
});
});
</script>
</head>
<body>
<div id="edmhunters_body">
<div class="navbar navbar-inverse navbar-fixed-top" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#"><img id="edm" src="/static/img/edmlogo.png" alt="EDM Hunters logo"/></a>
</div>
<div class="collapse navbar-collapse">
<ul class="nav navbar-nav">
<li class="active">
<a href="#"><strong>Top 100 DJs</strong></a>
</li>
<li>
<a href="/explore/"><strong>Explore More DJs</strong></a>
</li>
<li>
<a href="/genres/"><strong>Browse by Genres</strong></a>
</li>
<li>
<a href="/monthly/"><strong>Monthly Top Songs</strong></a>
</li>
<li>
<a href="/trending/"><strong>Trending Songs</strong></a>
</li>
</ul>
<form id="search_bar" class="navbar-form navbar-left">
<div class="form-group" id="dj-search">
<input type="text" class="form-control typeahead" placeholder="Search favourite DJs" autocomplete="off">
</div>
</form>
</div>
</div>
</div>
<div class="container">
<div class="jumbotron" style="color:white;background-color:#252525;">
<h1>EDM Hunters</h1>
<p>EDM Hunters is a place where you can listen to and discover the Top Electronic Dance Music Songs by the Top DJs of the world. Don't agree with a list? Vote for your favourite song. What's your #1?</p>
<p><a class="btn btn-primary btn-lg" role="button" href="/faq/">Learn more</a></p>
</div>
<div class="col-md-11">
<div class="row dj_row">
<div class="col-md-2 col-md-offset-1 text-center dj-md-2">
<p><strong>#1 Hardwell</strong></p>
<a href="/hardwell/"><img src="/static/img/1.jpg" class="img-rounded dj_img" alt="Hardwell"/></a>
</div>
<div class="col-md-2 text-center dj-md-2">
<p><strong>#2 Armin van Buuren</strong></p>
<a href="/armin-van-buuren/"><img src="/static/img/2.jpg" class="img-rounded dj_img" alt="Armin van Buuren"/></a>
</div>
<div class="col-md-2 text-center dj-md-2">
<p><strong>#3 Avicii</strong></p>
<a href="/avicii/"><img src="/static/img/3.jpg" class="img-rounded dj_img" alt="Avicii"/></a>
</div>
<div class="col-md-2 text-center dj-md-2">
<p><strong>#4 Tiesto</strong></p>
<a href="/tiesto/"><img src="/static/img/4.jpg" class="img-rounded dj_img" alt="Tiesto"/></a>
</div>
<div class="col-md-2 text-center dj-md-2">
<p><strong>#5 David Guetta</strong></p>
<a href="/david-guetta/"><img src="/static/img/5.jpg" class="img-rounded dj_img" alt="David Guetta"/></a>
</div>
</div>
<div class="row dj_row">
<div class="col-md-2 col-md-offset-1 text-center dj-md-2">
<p><strong>#6 Dimitri Vegas & Like Mike</strong></p>
<a href="/dimitri-vegas-and-like-mike/"><img src="/static/img/6.jpg" class="img-rounded dj_img" alt="Dimitri Vegas & Like Mike"/></a>
</div>
<div class="col-md-2 text-center dj-md-2">
<p><strong>#7 Nicky Romero</strong></p>
<a href="/nicky-romero/"><img src="/static/img/7.jpg" class="img-rounded dj_img" alt="Nicky Romero"/></a>
</div>
<div class="col-md-2 text-center dj-md-2">
<p><strong>#8 Steve Aoki</strong></p>
<a href="/steve-aoki/"><img src="/static/img/8.jpg" class="img-rounded dj_img" alt="Steve Aoki"/></a>
</div>
<div class="col-md-2 text-center dj-md-2">
<p><strong>#9 AfroHyman</strong></p>
<a href="/afroHyman/"><img src="/static/img/9.jpg" class="img-rounded dj_img" alt="AfroHyman"/></a>
</div>
<div class="col-md-2 text-center dj-md-2">
<p><strong>#10 Dash Berlin</strong></p>
<a href="/dash-berlin/"><img src="/static/img/10.jpg" class="img-rounded dj_img" alt="Dash Berlin"/></a>
</div>
</div>
<div class="endless_container">
<a class="endless_more" href="/?page=2"
rel="page">more</a>
<div class="endless_loading" style="display: none;"><img src="/static/img/ajax-loader.gif" style="margin-left:535px;margin-top:25px;" alt="loading"/></div>
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paginateOnScrollMargin: 130
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<p>*Rankings according to <a href="http://www.djmag.com/top100?year=2013" target="_blank">DJ Mag Top 100 DJs 2013</a></p>
</div>
<footer>
<span id=copy class='pull-right'><strong>© EDM Hunters 2014</strong></span>
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采纳答案by Alex P
As discussed in the comments: this problem was solved by the original poster. "undefined is not a function" means that the typeaheadproperty was actually undefined - so it can't be run as a function call. Normally this indicates a problem with the loading of the plugin, but:
正如评论中所讨论的：这个问题是由原始海报解决的。“未定义不是函数”意味着该typeahead属性实际上是未定义的 - 因此它不能作为函数调用运行。通常这表示插件加载有问题，但是：
- The typeahead plugin was loaded after jQuery, and
- There were no errors on the console suggesting that plugin wasn't loading.
- typeahead 插件是在 jQuery 之后加载的，并且
- 控制台上没有错误提示插件未加载。
In the end, another copy of jQuery was being loaded in the page. So jQuery was loading in the head, then the typeahead plugin was loading (making $('foo').typeahead()available)... and then the second copy was loading, wiping out the extended jQuery function. When the document.readycall fired it was this second jQuery that got used, resulting in the error.
最后，另一个 jQuery 副本被加载到页面中。所以 jQuery 正在加载head，然后 typeahead 插件正在加载（使$('foo').typeahead()可用）......然后第二个副本正在加载，消除了扩展的 jQuery 函数。当document.ready调用触发时，使用的是第二个 jQuery，从而导致错误。
