<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
.win {
color: red;
}
</style>
<script type="text/javascript" src="js/jquery-3.1.0.js">
</script>
<script type="text/javascript">
使用单例来创建弹窗
var CreatWindow = (function() {
var div;
return function() {
if(!div) {
div = document.createElement('div');
div.innerText = '我是单例创建的弹窗';
div.style.display = 'none';
div.className = 'win';
document.body.appendChild(div);
}
return div;
}
})();
window.onload = function() {
document.getElementById('btn1').onclick = function() {
var win = CreatWindow();
win.style.display = 'block';
}
}
</script>
</head>
<body>
<button id="btn1">点我</button>
</body>
</html>
