<head>
<script type="text/javascript" src="customScript.js"></script>
<link href="dist/css/bootstrap.min.css" rel="stylesheet">
<script src="docs/assets/js/vendor/jquery.min.js"></script>
<script src="dist/js/bootstrap.min.js"></script>
<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 -->
<meta name="description" content="">
<meta name="author" content="">
<link rel="icon" href="img/facebookicn.png">
<title>Facbook</title>
<link href="dist/css/jumbotron.css" rel="stylesheet">
<link href="dist/css/custom.css" rel="stylesheet">
</head>
//这是在coustom.js文件中
$(document).ready(function(){
$('[data-toggle="tooltip"]').tooltip();
});
//这是html
<div class="col-md-6 txtfeild ">
<a href="#" data-toggle="tooltip" data-placement="left" title="Hooray!"><input id="firstName" class="form-control" placeholder="First Name" type="text" onblur="validateName()" ></a>
</div>
我收到这样的错误 customScript.js:1未捕获的ReferenceError:$未定义 在customScript.js:1尝试了很多方法,但无法解决此错误
答案 0 :(得分:2)
导入customScript
脚本之前,jQuery
会触发。将导入行移到customScript
导入上方。
<script src="docs/assets/js/vendor/jquery.min.js"></script>
<script type="text/javascript" src="customScript.js"></script>
<link href="dist/css/bootstrap.min.css" rel="stylesheet">
答案 1 :(得分:1)
加载customScript.js后加载jQuery,因此变量$未定义。 加载jQuery后必须插入脚本。
<head>
<link href="dist/css/bootstrap.min.css" rel="stylesheet">
<script src="docs/assets/js/vendor/jquery.min.js"></script>
<script src="dist/js/bootstrap.min.js"></script>
<script type="text/javascript" src="customScript.js"></script>
<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 -->
<meta name="description" content="">
<meta name="author" content="">
<link rel="icon" href="img/facebookicn.png">
<title>Facbook</title>
<link href="dist/css/jumbotron.css" rel="stylesheet">
<link href="dist/css/custom.css" rel="stylesheet">
</head>
答案 2 :(得分:0)
为了在脚本中使用Jquery,首先需要加载它
<script
src="https://code.jquery.com/jquery-3.2.1.min.js"
integrity="sha256-hwg4gsxgFZhOsEEamdOYGBf13FyQuiTwlAQgxVSNgt4="
crossorigin="anonymous"></script>
在customeScript
之前添加此行以通过cdn添加jquery,或者如果已下载,则设置jquery文件的路径