【Vue】9.vue中子组件调用父组件的方法
vue中子组件调用父组件的方法,这里总结了三种:1.直接在子组件中通过this.$parent.event来调用父组件的方法Parent.vue<template><div><child></child></div></template&
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vue中子组件调用父组件的方法,这里总结了三种:
1.直接在子组件中通过this.$parent.event来调用父组件的方法
Parent.vue
<template>
<div>
<child></child>
</div>
</template>
<script>
import Child from '../../components/Child.vue';
export default {
data() {
return {
name: 'Parent',
};
},
methods: {
fatherMethod() {
console.log('testing');
},
},
components: {
child: Child,
},
};
</script>
<style scoped>
</style>
Child.vue
<template>
<div>
<button @click="childMethod">点击调用父组件方法</button>
</div>
</template>
<script>
export default {
data() {
return {
name: 'Child',
};
},
methods: {
childMethod() {
this.$parent.fatherMethod();
},
},
};
</script>
<style scoped>
</style>
2.在子组件里用$emit()向父组件触发一个事件,父组件监听这个事件就行了
Parent.vue
<template>
<div>
<child v-on:fatherMethod="fatherMethod"></child>
</div>
</template>
<script>
import Child from '../../components/Child.vue';
export default {
data() {
return {
name: 'Parent',
};
},
methods: {
fatherMethod() {
console.log('testing');
},
},
components: {
child: Child,
},
};
</script>
<style scoped>
</style>
Child.vue
<template>
<div>
<button @click="childMethod">点击调用父组件方法</button>
</div>
</template>
<script>
export default {
data() {
return {
name: 'Child',
};
},
methods: {
childMethod() {
// this.$parent.fatherMethod();
this.$emit('fatherMethod');
},
},
};
</script>
<style scoped>
</style>
3.父组件把方法传入子组件中,在子组件里直接调用这个方法
Parent.vue
<template>
<div>
<child :fatherMethod="fatherMethod"></child>
</div>
</template>
<script>
import Child from '../../components/Child.vue';
export default {
data() {
return {
name: 'Parent',
};
},
methods: {
fatherMethod() {
console.log('testing');
},
},
components: {
child: Child,
},
};
</script>
<style scoped>
</style>
Child.vue
<template>
<div>
<button @click="childMethod">点击调用父组件方法</button>
</div>
</template>
<script>
export default {
props: {
fatherMethod: {
type: Function,
default: null,
},
},
data() {
return {
name: 'Child',
};
},
methods: {
childMethod() {
// this.$parent.fatherMethod();
// this.$emit('fatherMethod');
this.fatherMethod();
},
},
};
</script>
<style scoped>
</style>
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