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编程网。
