javascript - 为什么点击关闭时body的backgroundColor颜色不能变为白色了
本文介绍了javascript - 为什么点击关闭时body的backgroundColor颜色不能变为白色了的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
问 题
<!DOCTYPE html>
<html>
<head>
<title>浮动窗口练习</title>
<meta charset="utf-8">
<style type="text/css">
body {
padding: 0;
margin: 0;
/* background-color: gray; */
}
.cover {
position: fixed;
top: 0;
left: 0;
display: none;
background-color: rgba(255,255,255,0.2);
/* opacity: 0.2; */
}
.alert1 {
width: 400px;
height: 200px;
border: 2px solid blue;
border-radius: 5px;
background-color: cyan;
margin-top: 100px;
margin-left: 500px;
display: inline-block;
}
</style>
</head>
<body>
<input type="button" value="点我看看" onclick="a.alertWindow()">
<a href=""></a>
</body>
</html>
<script type="text/javascript">
// function click0 () {
// alertWindow();
// }
function A (name) {
this.name = name;
this.alertWindow = function () {
document.body.style.backgroundColor = "rgb(255,255,255)";
var div = document.createElement('div');
div.setAttribute("class", "cover");
var div0 ="<div class = 'alert1'>";
div0 += '<div class="content"></div>';
div0 += '<div class="tool">';
div0 += '<p>' + name + '</p>';
div0 += '<input type="button" value="确定" id="Ok">';
div0 += '<input type="button" value="关闭" id="Cancle">';
div0 += '</div>';
div0 += '</div>';
div.innerHTML = div0;
document.body.appendChild(div);
div.style.display = 'block';
var cover = document.getElementsByClassName('cover')[0];
this.cover = div;
// var that = this;
var Ok1 = document.getElementById('Ok');
var Cancle1 = document.getElementById('Cancle');
var that = this;
Ok1.onclick = function () {
// cover.style.display = "none";
var x = 255;
var y = 0;
function change () {
x--;
y++;
document.body.style.backgroundColor = "rgb(255," + y + "," + x + ")";
setInterval(change, 200);
if (x == 0) {
clearInterval(change);
// document.body.style.backgroundColor = "rgb(255," + y + "," + x + ")";
}
}
setTimeout(change, 200);
that.close();
}
Cancle1.onclick = function () {
// cover.style.display = "none";
document.body.style.backgroundColor = "rgb(0,255,0)";
that.close();
// var bgColor = document.getElementsByTagName('body');
// bgColor.style.backgroundColor = "white";
}
this.adjust();
}
this.close = function () {
// cover.remove();
this.cover.remove();
}
this.adjust = function () {
// 1 让弹出层的大小跟窗口一样大
this.cover.style.width = window.innerWidth+"px";
this.cover.style.height = window.innerHeight+"px";
}
}
var a = new A("百度");
</script>
</body>解决方案
Cancle1.onclick = function () {
// cover.style.display = "none";
document.body.style.backgroundColor = "rgb(0,255,0)";
that.close();
// var bgColor = document.getElementsByTagName('body');
// bgColor.style.backgroundColor = "white";
}你设置的backgroundColor不是绿色的吗?
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