vue子组件的自定义事件

<template>
    <div>
        <my-child abcClick="sayHello"></my-child>
    </div>
</template>

<script>
export default {
    method: {
        sayHello(Num,Str) {
            alert(‘hello world~~‘ + Num + Str)
        }
    }
}
</script>

<template>
    <div>
        <!--例如最简单的封装一个按钮-->
        <button @click="childClick"></button>
    </div>
</template>

<script>
export default {
    data: {
        return{
            myNum: 456,
            myStr: ‘haha‘
        }
    },
    method: {
        childClick() {
            this.$emit(‘abcClick‘, this.myNum, this.myStr)
        }
    }
}
</script>