vue实现简单放大镜效果
程序员文章站
2022-04-24 11:18:15
本文实例为大家分享了vue实现简单放大镜效果的具体代码，供大家参考，具体内容如下
本文实例为大家分享了vue实现简单放大镜效果的具体代码，供大家参考，具体内容如下
<template>
<div>
<div class="imgmerror">
<div class="smalldiv" @mousemove="move($event)" @mouseenter="enter()" @mouseleave="leave()">
<img src="/image/2017/07/26/0d6069de4916471b92da66b0da8f0ec9.jpg" alt="">
<div class="imgmask"></div>
</div>
<div class="bigdiv">
<img src="/image/2017/07/26/0d6069de4916471b92da66b0da8f0ec9.jpg" alt="" class="bigimg">
</div>
</div>
</div>
</template>
<script>
export default {
data() {
return {
}
},
methods: {
enter(){
let imgmaskdom = document.queryselector('.imgmask');
let bigdivdom = document.queryselector('.bigdiv');
imgmaskdom.style.display = 'block';
bigdivdom.style.display = 'block';
},
leave(){
let imgmaskdom = document.queryselector('.imgmask');
let bigdivdom = document.queryselector('.bigdiv');
imgmaskdom.style.display = 'none';
bigdivdom.style.display = 'none';
},
move(e){
let smalldivdom = document.queryselector('.smalldiv');
let imgmaskdom = document.queryselector('.imgmask');
let bigdivdom = document.queryselector('.bigdiv');
let bigimgkdom = document.queryselector('.bigimg');
let ev = e || window.event;
let left = ev.clientx - smalldivdom.offsetleft - imgmaskdom.offsetwidth/2;
let top = ev.clienty - smalldivdom.offsettop - imgmaskdom.offsetheight/2;
if(left < 0) left=0;
if(left > smalldivdom.offsetwidth - imgmaskdom.offsetwidth){
left = smalldivdom.offsetwidth - imgmaskdom.offsetwidth;
}
if(top < 0) top=0;
if(top > smalldivdom.offsetheight - imgmaskdom.offsetheight){
top = smalldivdom.offsetheight - imgmaskdom.offsetheight;
}
imgmaskdom.style.left = left + 'px';
imgmaskdom.style.top = top + 'px';
//移动比例
let precentx = left / (smalldivdom.offsetwidth-imgmaskdom.offsetwidth);
let precenty = top / (smalldivdom.offsetheight-imgmaskdom.offsetheight);
bigimgkdom.style.left = precentx * (bigdivdom.offsetwidth - bigimgkdom.offsetwidth) + 'px';
bigimgkdom.style.top = precenty * (bigdivdom.offsetheight - bigimgkdom.offsetheight) + 'px';
}
},
}
</script>
<style lang="scss">
*{
margin: 0;
padding: 0;
}
.imgmerror{
position: relative;
padding: 50px;
.smalldiv{
border: 1px solid #ccc;
width: 360px;
height: 360px;
position: relative;
left: 0;
top: 0;
img{
width: 100%;
height: 100%;
}
.imgmask{
width: 240px;
height: 240px;
background: #00ff98;
opacity: 0.5;
cursor: move;
position: absolute;
left:0;
top: 0;
display: none;
}
}
.bigdiv{
border: 1px solid #ccc;
width: 540px;
height: 540px;
position: relative;
left: 380px;
top: -360px;
overflow: hidden;
display: none;
img{
width: 600px;
height: 600px;
position: absolute;
left: 0;
top: 0;
}
}
}
</style>
效果图：
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。