# 有趣的拖动黑白对比图片特效
# 快速导航
# 示例效果
# 原生版本实现
<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="UTF-8">
<title>有趣的拖动黑白对比图片特效</title>
<style>
.container{
max-width:900px;
margin:auto;
}
#inked-painted {
position: relative;
font-size: 0;
-ms-touch-action: none;
-webkit-touch-callout: none;
-webkit-user-select: none;
}
#inked-painted img {
width: 100%;
height: auto;
}
#colored {
background-image: url(https://codyhouse.co/demo/image-comparison-slider/img/img-original.jpg);
position: absolute;
top: 0;
left: 0;
height: 100%;
width: 50%;
background-size: cover;
}
#inked-painted:hover {
cursor: col-resize;
}
</style>
</head>
<body>
<div class="container">
<div id="inked-painted">
<img src="https://codyhouse.co/demo/image-comparison-slider/img/img-modified.jpg" id="inked" alt>
<div id="colored"></div>
</div>
</div>
<script>
var inkbox = document.getElementById("inked-painted");
var colorbox = document.getElementById("colored");
var fillerImage = document.getElementById("inked");
inkbox.addEventListener("mousemove",trackLocation,false);
inkbox.addEventListener("touchstart",trackLocation,false);
inkbox.addEventListener("touchmove",trackLocation,false);
function trackLocation(e){
var rect = fillerImage.getBoundingClientRect();
var position = ((e.pageX - rect.left) / fillerImage.offsetWidth)*100;
if(position <= 100){
colorbox.style.width = position+"%";
}
}
</script>
</body>
</html>
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# Vue版本实现
如下是示例代码
<template>
<div>
<div class="container">
<div id="inked-painted" ref="inkedPainted">
<img src="https://codyhouse.co/demo/image-comparison-slider/img/img-modified.jpg" id="inked" ref="inkedImg" alt>
<div id="colored" ref="colored"></div>
</div>
</div>
</div>
</template>
<script>
export default {
name: 'drawHeiBai',
mounted() {
this.$refs.inkedPainted.addEventListener('mousemove',this.trackLocation,false);
this.$refs.inkedPainted.addEventListener('touchstart',this.trackLocation,false);
this.$refs.inkedPainted.addEventListener('touchmove',this.trackLocation,false);
},
methods: {
trackLocation(e) {
let rect = this.$refs.inkedImg.getBoundingClientRect();
let position = ((e.pageX - rect.left) / this.$refs.inkedImg.offsetWidth)*100;
if(position <= 100){
this.$refs.colored.style.width = position+"%";
}
}
}
}
</script>
<style scoped>
#inked-painted {
position: relative;
font-size: 0;
-ms-touch-action: none;
-webkit-touch-callout: none;
-webkit-user-select: none;
}
#inked-painted img {
width: 100%;
height: auto;
}
#colored {
background-image: url(https://codyhouse.co/demo/image-comparison-slider/img/img-original.jpg);
position: absolute;
top: 0;
left: 0;
height: 100%;
width: 50%;
background-size: cover;
}
#inked-painted:hover {
cursor: col-resize;
}
</style>
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