vue.js 点击价格升降的问题？

Question

点击第一次v-on:click="popularity(2,1),第二次v-on:click="popularity(2,0)，第三次再次切换v-on:click="popularity(2,1)；求大神指导啊

Answer 1

v-on:click="popularity(2,desc)"

data: {

return {

    'desc': true

}

}

popularity() {

// business logics

desc = !desc

}