vue.js input加减怎么实现

Question

<div class="min " name="">-</div>    <input class="text-box" name="pricenum" type="tel" v-model="counter" placeholder="请输入价格" onkeyup="onKeyPrice(this);" maxlength="12 " /><div class="add" name="">+</div>

Answer 1

<div id="app">

    <div class="min" name="" v-on:click="min">-</div>

        <input class="text-box" name="pricenum"  type="tel" v-model="counter" placeholder="请输入价格"  maxlength="12 " />

    <div class="add" name="" v-on:click="add">+</div>

</div>

new Vue({

    el: '#app',

    data: {

        counter: 0,

    },

    methods: {

        add: function() {

            this.counter = parseInt(this.counter) + 1;

        },

        min: function(){

            if(this.counter > 0){

                this.counter = parseInt(this.counter) - 1;

            }

        }

    }

})