<div class="show-box" ref="rotate" @mousedown="moveImg" @mousewheel.prevent="rollImg($event,)">
<img :src="singleList.fileImgUrl" class="uploadimg" ref="img" :style="{transform:'scale('+multiples/100+') rotate('+rotate +'deg)'}"/>
</div>
<div class="img-plus" @click="toBIgChange()"><span class="tip">放大</span></div>
<div class="img-minus" @click="toSmallChange()"><span class="tip">缩小</span></div>
<div class="img-rotate" @click="toRotate()"><span class="tip">旋转</span></div>
</div>
直接设置图片对象的宽高即可。var img=document.getElementById("photo")
img.width=200img.height=200
也可以设置style
img.style.width="200px"img.style.height="200px"