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這是我的html代碼：Bootstrap.js不工作
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html lang="ru">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<title>Tasks</title>
<!-- Bootstrap -->
<link href="css/bootstrap.css" rel="stylesheet">
<link href="css/mystyle/style.css" rel="stylesheet">
<link href="css/mystyle/equal-height-columns.css" rel="stylesheet"/>
<link href="css/mystyle/auto-colums.css" rel="stylesheet"/>
<link href="css/mystyle/navbar-style.css" rel="stylesheet"/>
<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<div class="navbar navbar-default navbar-static-top">
<div class="container">
<a class="navbar-brand" href="/">Tasks</a>
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#responsive-menu">
<span class="sr-only">Открыть навигацию</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
</div>
<div class="collapse navbar-collapse" id="responsive-menu">
<ul class="nav navbar-nav">
<li><a href="index.php">Добавить задачу</a></li>
<li><a href="tasks.php">Список задач</a></li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown"><b>Войти</b> <span class="caret"></span></a>
<ul id="login-dp" class="dropdown-menu">
<li>
<div class="row">
<div class="col-md-12">
<form class="form" role="form" method="post" action="login" accept-charset="UTF-8" id="login-nav">
<div class="form-group">
<label class="sr-only" for="inputLogin">Login</label>
<input type="text" class="form-control" id="inputLogin" placeholder="Логин" required>
</div>
<div class="form-group">
<label class="sr-only" for="inputPass">Password</label>
<input type="password" class="form-control" id="inputPass" placeholder="Пароль" required>
</div>
<div class="form-group btn-submit">
<button type="submit" class="btn btn-primary btn-block">Войти</button>
</div>
</form>
</div>
</div>
</li>
</ul>
</li>
</ul>
</div>
</div>
</div>
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="js/bootstrap.js"></script>
</body>
</html>
Bootstrap.js不靈，斜面undarstand原因。
文件目錄：
-project
--index.php
--js
---bootstrap.js
這個選項我嘗試過：
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
我複製了新的項目，在老同一個項目的所有工作正常。 我很困惑，謝謝你的幫助。
嘗試在'bootstrap.js'繫繩js