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JavaScript 在 Cordova Visual Studio 2015 中无法工作

转载 作者:行者123 更新时间:2023-11-28 05:05:18 25 4
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我正在开发一个混合应用程序,创建了html页面和css,在html中我包含了JavaScript,但简单的警报消息也不起作用,并且在javascript(index.js)中创建了验证功能,请帮助我。

var attempt = 3; // Variable to count number of attempts.
// Below function Executes on click of login button.
function validate() {
var username = document.getElementById("username").value;
var password = document.getElementById("password").value;
if (username == "abcdef" && password == "abc#123") {
alert("Login successfully");
window.location = "success.html"; // Redirecting to other page.
return false;
}
else {
attempt--;// Decrementing by one.
alert("You have left " + attempt + " attempt;");
// Disabling fields after 3 attempts.
if (attempt == 0) {
document.getElementById("username").disabled = true;
document.getElementById("password").disabled = true;
document.getElementById("submit").disabled = true;
return false;
}
}
}
/* Below line is used for online Google font */
@import url(https://fonts.googleapis.com/css?family=Raleway);
body{
background :#f2ca78;
}
h2{
/*/background-color: #FEFFED;*/
padding: 30px 35px;
margin: -10px -50px;
text-align:center;
border-radius: 10px 10px 0 0;
}
hr{
margin: 10px -50px;
border: 0;
border-top: 1px solid #ccc;
margin-bottom: 40px;
}
/*div.container{
width: 900px;
height: 610px;
margin:35px auto;
font-family: 'Raleway', sans-serif;
}*/

div.main{
background-color: #f8f2f2;
width: 230px;
padding: 10px 50px 25px;
border: 2px solid gray;
border-radius: 10px;
font-family: raleway;
float:left;
margin-top:50px;
}
input[type=text],input[type=password]{
width: 100%;
height: 40px;
padding: 5px;
margin-bottom: 25px;
margin-top: 5px;
border: 2px solid #ccc;
color: #4f4f4f;
font-size: 16px;
border-radius: 5px;
}
label{
color: #464646;
text-shadow: 0 1px 0 #fff;
font-size: 14px;
font-weight: bold;
}
center{
font-size:32px;
}
.note{
color:red;
}
.valid{
color:green;
}
.back{
text-decoration: none;
border: 1px solid rgb(0, 143, 255);
background-color: rgb(0, 214, 255);
padding: 3px 20px;
border-radius: 2px;
color: black;
}
input[type=button]{
font-size: 16px;
background: linear-gradient(#ffbc00 5%, #ffdd7f 100%);
border: 1px solid #e5a900;
color: #4E4D4B;
font-weight: bold;
cursor: pointer;
width: 100%;
border-radius: 5px;
padding: 10px 0;
outline:none;
}
input[type=button]:hover{
background: linear-gradient(#ffdd7f 5%, #ffbc00 100%);
}
<!DOCTYPE html>
<html>
<head>
<!--
Customize the content security policy in the meta tag below as needed. Add 'unsafe-inline' to default-src to enable inline JavaScript.
For details, see http://go.microsoft.com/fwlink/?LinkID=617521
-->
<meta http-equiv="Content-Security-Policy" content="default-src 'self' data: gap: https://ssl.gstatic.com 'unsafe-eval'; style-src 'self' 'unsafe-inline'; media-src *">

<meta name="format-detection" content="telephone=no">
<meta name="msapplication-tap-highlight" content="no">
<meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width">
<!-- <link rel="stylesheet" type="text/css" href="css/index.css">-->
<link rel="stylesheet" href="css/style.css" />
<script typ="test/javascript" src="js/login.js"></script>
<script type="text/javascript" src="cordova.js"></script>
<script type="text/javascript" src="scripts/platformOverrides.js"></script>
<script type="text/javascript" src="scripts/index.js"></script>
<title>BlankCordovaApp1</title>

</head>
<body bgcolor="pink">
<h1 style="color:black;text-align:center"> HEALTH APP</h1>
<!--<div class="container">-->
<div class="main">
<h2>Welcome</h2>
<form id="form_id" method="post" name="myform">
<label>User Name :</label>
<input type="text" name="username" id="username" />
<label>Password :</label>
<input type="password" name="password" id="password" />
<button type="button" value="Login" id="submit" onclick="validate()" />
</form>
<span><b class="note">Note : </b>For this demo use following username and password. <br /><b class="valid">User Name : abcdef<br />Password : abc#123</b></span>
</div>
</body>
</html>

最佳答案

您无法在 Cordova 中的 html 文件中运行 javascript。您需要在 index.js 文件中添加一个事件监听器:

 document.getElementById('submit').addEventListener('click', validate);

然后在同一个文件中写入您的函数 validate()

关于JavaScript 在 Cordova Visual Studio 2015 中无法工作,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/41801229/

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