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你好夥伴開發者, 我是PhoneGap的新手,未編碼多年,並且在下面的addEventListener中遇到了問題。PhoneGap/Cordova v5 addEventListener不等待點擊的點擊事件
即使用戶沒有單擊該按鈕,該事件被調用並且顯示警報,但我正在JavaScript中的addEventListener中抽樣的警報始終顯示。我想確保只在按鈕被實際點擊時顯示警報。
任何幫助,你可以提供將是非常棒的。
乾杯 德瑞
var app = {
// Application Constructor
initialize: function() {
this.bindEvents();
},
bindEvents: function() {
document.addEventListener('deviceready', this.onDeviceReady, false);
},
// deviceready Event Handler
onDeviceReady: function() {
alert("PhoneGap is working in index.js onDeviceReady");
var buttonTwo = document.getElementById("btnPageTwo");
// the below event listener is fired always, even without the user clicking or performing any action the alert is displayed
buttonTwo.addEventListener('click', alert("Button Clicked"), false);
app.receivedEvent('deviceready');
},
// Update DOM on a Received Event
receivedEvent: function(id) {
var parentElement = document.getElementById(id);
var listeningElement = parentElement.querySelector('.listening');
var receivedElement = parentElement.querySelector('.received');
listeningElement.setAttribute('style', 'display:none;');
receivedElement.setAttribute('style', 'display:block;');
console.log('Received Event: ' + id);
}
};
app.initialize();
<html>
<head>
<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">
<script type="text/javascript" src="cordova.js"></script>
<script type="text/javascript" src="js/index.js"></script>
<title>Multipage Document Lesson 09</title>
</head>
<body>
<p>First Page</p>
<button id="btnPageTwo">Go to Page 2</button>
</body>
</html>