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1. 在子组件中通过this.$parent.event来调用父组件的方法,data参数可选
<template>
<div>
<h1>我是父组件</h1>
<child />
</div>
</template>
<script>
import child from '@/components/child';
export default {
components: {
child
},
methods: {
fatherMethod(data) {
console.log('我是父组件方法');
}
}
};
</script>
<template>
<div>
<h1>我是子组件</h1>
<button @click="childMethod(data)">点击</button>
</div>
</template>
<script>
export default {
methods: {
childMethod() {
this.$parent.fatherMethod(data);
console.log('调用父组件方法')
}
}
};
</script>
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2. 在子组件里用$emit向父组件触发一个事件,父组件监听这个事件,data参数可选
<template>
<div>
<h1>我是父组件</h1>
<child @fatherMethod="fatherMethod"/>
</div>
</template>
<script>
import child from '@/components/child';
export default {
components: {
child
},
methods: {
fatherMethod(data) {
console.log('我是父组件方法');
}
}
};
</script>
<template>
<div>
<h1>我是子组件</h1>
<button @click="childMethod(data)">点击</button>
</div>
</template>
<script>
export default {
methods: {
childMethod(data) {
this.$emit('fatherMethod', data);
console.log('调用父组件方法')
}
}
};
</script>
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3. 父组件通过props把方法传入子组件中,在子组件里直接调用这个方法,data参数可选
<template>
<div>
<h1>我是父组件</h1>
<child :fatherMethod="fatherMethod" />
</div>
</template>
<script>
import child from '@/components/child';
export default {
components: {
child
},
methods: {
fatherMethod(data) {
console.log('我是父组件方法');
}
}
};
</script>
<template>
<div>
<h1>我是子组件</h1>
<button @click="childMethod(data)">点击</button>
</div>
</template>
<script>
export default {
props: {
fatherMethod: {
type: Function,
default: null
}
},
methods: {
childMethod(data) {
if (this.fatherMethod) {
this.fatherMethod(data);
console.log('调用父组件传递的方法')
}
}
}
};
</script>