vue中不提倡直接操作dom元素，所以这里使用类名实行互斥效果。
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<template lang="pug"> ul li(v-for="(item,index) in classArr", @click="result(index)", :class="resultNum === index?'active':''") this is {{item}}</template><style lang="scss"> li { list-style: none; 100px; margin-top: 10px; border: 1px solid red; &:hover { cursor: pointer; } } .active{ }</style><script> export default{ data(){ return { classArr: ["one", "two", "three"], num:"", } }, methods: { result(index){ this.num = index; } }, computed:{ resultNum(){ return this.num; } } }</script> |