从A页面进入B页面， 再从B页面点击右上角回退到A页面 A页面输入框的值还在 生命周期也没有执行

<template>  
    <view class="content">  
        <!-- <myHeader></myHeader> -->  
        <image class="logo" src="/static/logo.png" @tap="goJump"></image>  
        <view>  
            <text class="title">{{title}}</text>  
        </view>  
    </view>  
</template>  

<script>  
import myHeader from '../../components/my-header.vue';  
export default {  
    data() {  
        return {  
            title: 'Hello'  
        }  
    },  
    components:{  
        myHeader  
    },  
    onLoad() {  
        console.log(11)  
        this.title = 'nihao';  
    },  
    methods: {  
        goJump(){  
            uni.navigateTo({  
                url: '../list/list'  
            });  
        }  
    },  
    computed:{  
        searchText(){  
            return this.$store.state.searchText;  
        }  
    }  
}  
</script>  

<style>  
    .content {  
        text-align: center;  
        height: 400upx;  
    }  
    .logo{  
        height: 200upx;  
        width: 200upx;  
        margin-top: 200upx;  
    }  
    .title {  
        font-size: 36upx;  
        color: #8f8f94;  
    }  
</style>  

B页面  
<template>  
    <view>  
        <view>{{searchText}}</view>  
        <view class="" @tap="goFile">  
            <view>1</view>  
            <view>1</view>  
            <view>1</view>  
        </view>  
    </view>  
</template>  

<script>  
    export default {  
        data() {  
            return {  

            };  
        },  
        onLoad() {  
        },  
        methods:{  
            setList(){  

            },  
            goFile(){  
                uni.navigateTo({  
                    url: '../file/file'  
                });  
            }  
        },  
        computed:{  
            searchText(){  
                return this.$store.state.searchText;  
            }  
        }  
    }  
</script>  

<style>  

</style>  

a页面onShow会触发