概述

事件监听使用 v-on 指令

v-on:click点击事件，可以简写成@click

代码

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<div id="app" style="text-align: center">
    <h3>计数器：<span style="color: red">{{counter}}</span></h3>
    <button v-on:click="counter++">加1</button>
    <button @click="counter--">减1</button>
    <br>
    <input type="text" v-model="number">
    <button @click="add(number)">加</button>
    <br>
    <input type="text" v-model="number2">
    <button @click="less(number2)">减</button>
</div>
<script type="text/javascript">
    new Vue({
        el: '#app',
        data: {
            counter: 0,
            number: 0,
            number2: 0
        },
        methods: {
            add: function (number) {
                this.counter += parseInt(number);
            },
            less: function (number2) {
                this.counter -= parseInt(number2);
            }
        }
    })
</script>

img