一.子元件調用父元件的方法
1.是直接在子元件中通過this.$parent.event來調用父元件的方法
父元件
<template>
<div>
<child></child>
</div>
</template>
<script>
import child from '~/components/dam/child';
export default {
components: {
child
},
methods: {
fatherMethod() {
console.log('測試');
}
}
};
</script>
子元件
<template>
<div>
<button @click="childMethod()">點選</button>
</div>
</template>
<script>
export default {
methods: {
childMethod() {
this.$parent.fatherMethod();
}
}
};
</script>
2.是在子元件裡用$emit向父元件觸發一個事件,父元件監聽這個事件
父元件
<template>
<div>
<child @fatherMethod="fatherMethod"></child> //父元件監聽
</div>
</template>
<script>
import child from '~/components/dam/child';
export default {
components: {
child
},
methods: {
fatherMethod() { //事件
console.log('測試');
}
}
};
</script>
子元件
<template>
<div>
<button @click="childMethod()">點選</button>
</div>
</template>
<script>
export default {
methods: {
childMethod() {
this.$emit('fatherMethod');// $emit向父元件觸發事件
}
}
};
</script>
3.是父元件把方法傳入子元件中,在子元件裡直接調用這個方法
父元件
<template>
<div>
<child :fatherMethod="fatherMethod"></child>
</div>
</template>
<script>
import child from '~/components/dam/child';
export default {
components: {
child
},
methods: {
fatherMethod() {
console.log('測試');
}
}
};
</script>
子元件
<template>
<div>
<button @click="childMethod()">點選</button>
</div>
</template>
<script>
export default {
props: {
fatherMethod: {
type: Function,
default: null
}
},
methods: {
childMethod() {
if (this.fatherMethod) {
this.fatherMethod();
}
}
}
};
</script>
**
二.父元件調用子元件的方法
**
父元件
<template>
<div>
<div @click="fatherMethod"></div>
<child ref="childRef"></child>
</div>
</template>
<script>
import child from '~/components/dam/child';
export default {
components: {
child
},
methods: {
fatherMethod() {
this.$refs.childRef.childMethod()//父元件調用子元件的childMethod方法,顯示
}
}
};
</script>
子元件
<template>
<div>
<div v-if="isShow">child</div>
</div>
</template>
<script>
export default {
data(){
return {
isShow:false
}
}
methods: {
childMethod() { //
this.isShow = !this.isShow
}
}
}
};
</script>