组件使用less，请确保已安装loader
本组件为放大镜组件，传参列表为:
•width: 必传，设置放大镜的宽高(正方形)，放大区域等同，放大倍数为2倍
•picList:必传，传入图片列表
使用示例:
script:
import mirror from 'xx/mirror' export default { components:{ mirror }, data(){ return { width:300, picList:[ xxxxxx, xxxxxx ], } } }
html:
<mirror :width="width" :picList="picList" />
详细代码:
HTML:
<template> <div> <div :style="{width:width+'px',height:width+'px'}" > <div ref="truth" :style="{width:'100%',height:'100%'}" @mousemove="move" @mouseenter="showMagnify" @mouseleave="hideMagnify"> <div ref="mask" v-show = "showMask" :style="{width:width/2+'px',height:width/2+'px',left:maskPosition.x+'px',top:maskPosition.y+'px'}"></div> <img :src="picList[picIndex]" draggable="false"/> </div> <div ref="virtual" v-if = "isShowVirtual" :style="{width:width+'px',height:width+'px'}" > <div ref = "bigPic" :style="{position:'absolute',width:2*width+'px',height:2*width+'px',backgroundSize:'100% 100%',backgroundImage:`url(${picList[picIndex]})`,left:percent.x, top:percent.y}" > </div> </div> </div> <ul :style="{width:width+'px'}"> <li v-for = "(item,index) in picList" :class="{now:index==picIndex}" :data-index="index" :key ="item" @mouseenter="changeIndex"> <img :src ="item" /> </li> </ul> </div> </template>
JS:
export default { props:['width','picList'],//宽度是用来给放大镜的 data(){ return { picIndex:0, isShowVirtual:false, showMask:false, maskPosition:{}, percent:{}, } }, methods:{ computedOffset(obj,prop){ //计算元素到body的绝对位置 if(obj==document.body || obj.offsetParent == document.body){ return parseInt(obj[prop]) } return parseInt(obj[prop])+this.computedOffset(obj.offsetParent,prop) }, changeIndex(e){ this.picIndex = e.target.dataset.index }, showMagnify(e){ this.showMask=true; this.isShowVirtual = true; }, hideMagnify(){ this.isShowVirtual=false; this.showMask=false }, computePosition(e){ let x = e.pageX,y = e.pageY; let mask = this.$refs.mask; let truth = this.$refs.truth; let virtual = this.$refs.virtual; let bigPic = this.$refs.bigPic; x = x-this.computedOffset(truth,'offsetLeft') -mask.offsetWidth/2; y = y-this.computedOffset(truth,'offsetTop')- mask.offsetHeight/2; if(x<=0) { x=0 }else if(x>truth.offsetWidth - mask.offsetWidth){ x = truth.offsetWidth/2 } if(y<=0){ y=0; } else if(y>truth.offsetHeight - mask.offsetHeight){ y = truth.offsetHeight/2 } this.maskPosition = { x,y } //计算比例 this.percent={ x:-x/(truth.offsetWidth-mask.offsetWidth)*(bigPic.offsetWidth - virtual.offsetWidth)+'px', y:-y/(truth.offsetHeight-mask.offsetHeight)*(bigPic.offsetHeight - virtual.offsetHeight)+'px' } }, move(e){ this.computePosition(e) } } }
CSS:
<style lang="less" scoped> .now{ border-color: cyan !important; } .mirror{ width:100%; .wrap{ user-select: none; margin-bottom: 20px; position: relative; background-color: #fff; border:1px solid gray; box-sizing:border-box; cursor: pointer; img{ width:100%; height:100%; } .virtual{ overflow:hidden; width:100%; height:100%; position:absolute; left:calc(100% + 10px); top:0; background-repeat:no-repeat } .mask{ position: absolute; background-image: url('https://img-tmdetail.alicdn.com/tps/i4/T12pdtXaldXXXXXXXX-2-2.png'); background-repeat:repeat; cursor: move; } } .picList{ width:100%; display: flex; justify-content: space-between; flex-wrap:wrap; li{ width:50px; height:50px; margin:5px; border:1px solid transparent; box-sizing: border-box; img{ width:100%; height:100% } } } .picList:after{ content:""; flex:auto; } } </style>
可直接复制文件内容至项目使用，文件地址：https://blog-static.cnblogs.com/files/hhyf/mirror.vue.js
效果
总结
以上所述是小编给大家介绍的一个手写的vue放大镜效果,希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持！
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