<template>
 <div class="scroll">
 <div class="container" @mousemove="mousemove">
 <div class="base"></div>
 <div class="left" ref="left">
 <img src="../../static/image/kda-karsa.jpg" alt="">
 </div>
 </div>
 </div>
</template>
<script>
export default {
 data() {
 return {
 posX: 0
 }
 },
 methods: {
 mousemove(e) {
 // 獲取x 坐標
 this.posX = e.offsetX 
 }
 },
 watch: {
 posX(curX) {
 this.$refs.left.style.width = `${curX}px`
 } 
 }
}
</script>
<style lang="scss" scoped>
.scroll{
 .container{
 width: 960px;
 height: 540px;
 background-color: #cccccc;
 position: relative;
 cursor: ew-resize;
 .base{
 position: absolute;
 width: 960px;
 height: 540px;
 top: 0;
 left: 0;
 background: url('../../static/image/kda-karsa-golden.jpg') no-repeat;
 background-size: 100%;
 }
 .left{
 position: absolute;
 width: 480px;
 height: 540px;
 overflow: hidden;
 top: 0;
 left: 0;
 img{
 width: 960px;
 height: 540px; 
 }
 }
 }
}
</style>