js开灯关灯效果_增强版

2019-01-24 分类：前端作者：huanggr 阅读（2341）

在一些小游戏界面，都会出现一些开关灯的按钮，那么这些效果是如何做出来的呢，今天我们就来探讨一下，其实制作这些效果非常的简单，就是利用了js操作DOM的特性，通过点击跟换样式来实现，源码如下：

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Document</title>
<link href="https://cdn.bootcss.com/bootstrap/3.3.4/css/bootstrap.min.css" rel="stylesheet">
<style type="text/css">
body {
transition: all .6s;
}

#left-fixed {
position: fixed;
/* left: -275px; */
top: 20%;
width: 300px;
padding: 20px;
height: auto;
border-radius: 5px;
background-color: #ccc;
transition: all .6s;
}

#left-fixed:hover {
left: 0;
background-color: pink;
}

* {
margin: 0;
padding: 0;
}

img {
border: 0;
}

ol,
ul,
li {
list-style: none;
}

h4 {
text-align: center;
font-size: 40px;
margin: 20px 0;
text-shadow: 0 0 10px #ccc;
}
</style>
</head>

<body>
<h4>您可以点击切换桌面</h4>

<div id="left-fixed">

<label for="inputs">改变背景色：</label>
<input type="color" class="form-control" id="inputs">
<br />
<button type="" class="form-control" id="buttons">确定</button>
<div>
<label for="linear-deg">改变小盒子的渐变角度</label>
<input type="number" class="form-control" id="linear-deg" max="360" placeholder="输入的数值大于360无效">
<label for="linear-bgc">改变小盒子的渐变颜色（1）</label>
<input type="color" class="form-control" id="linear-bgc">
<label for="linear-bgc1">改变小盒子的渐变颜色（2）</label>
<input type="color" class="form-control" id="linear-bgc1">
<br />
<button type="" class="form-control" id="btn-linear-bgc">确定</button>
<br>
<input type="submit" class="form-control" name="" value="点击清空" onclick="window.location.href=''">
</div>
</div>
</body>

</html>
<script type="text/javascript">
/*开关灯--开始*/
/* var switchGo = document.getElementById("switchGo");
var i = -1;
switchGo.onclick = function() {
i++;
if(i == 0) {
document.body.style.background = "#000";
this.value = "开灯";
}
if(i == 1) {
document.body.style.background = "#fff";
this.value = "关灯";
i = -1;
}
}*/
/*开关灯--结束*/

/*这里是渐变部分的实现--开始*/
var linearBgc = document.getElementById("linear-bgc");
var linearBgc1 = document.getElementById("linear-bgc1");
var btnLinearBgc = document.getElementById("btn-linear-bgc");
var linearDeg = document.getElementById("linear-deg");

var h4s = document.getElementsByTagName("h4");

/*单种颜色的切换*/
var buttons=document.getElementById("buttons");

var colorOne="#000";
inputs.onmouseout=function(){
//document.body.style.backgroundColor=colorOne;
colorOne=this.value;

//alert(colorOne);
//弹窗测试是否有效果
}
buttons.onclick=function(){
document.body.style.background = "linear-gradient(" + 0 + "deg" + "," + colorOne + "," + colorOne + ")";
}

btnLinearBgc.onclick = function() {
var color = linearBgc.value;
var color1 = linearBgc1.value;

var numberDeg = linearDeg.value;
console.log(numberDeg);
boxColor(numberDeg, color, color1);

}
function boxColor(numberDeg, color, color1) {
for(var i = 0; i < h4s.length; i++) {
if(numberDeg == "")
/**/
h4s[i].parentNode.style.background = "linear-gradient(" + color + "," + color1 + ")";
else
h4s[i].parentNode.style.background = "linear-gradient(" + numberDeg + "deg" + "," + color + "," + color1 + ")";
}
}

</script>

如上就是本期的内容了，希望大家能够学到！

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