uni-app的基本語法和規(guī)范

生命周期函數(shù)

image.png
<template>
    <view class="content">
        
            <uni-calendar 
            :insert="true"
            :lunar="true" 
            :start-date="'2019-3-2'"
            :end-date="'2019-5-20'"
             ></uni-calendar>
        
        
        
        
        <testList :title="msg" @myEdits="getNums"></testList>
        <text>子組件傳遞的數(shù)據(jù){{num}}</text>
        <testa> </testa>
        <testb> </testb>




        <view class="text-area">
            <image v-for="(item,i) in imgArrs" :src="item" @click="perivImgs(item)"></image>
            樣式
        </view>
        <view class="iconfont icon-ningmeng-01" style="color:red"></view>
        <button @click="but(2,$event)">點(diǎn)擊$event</button>
        <button @click="pull">點(diǎn)擊頁面刷新</button>
        <button @click="getUrls">發(fā)送數(shù)據(jù)請求</button>
        <button @click="setSlosge">異步設(shè)置存儲</button>
        <button @click="getSlosge">異步獲取存儲</button>
        <button @click="removeSlosge">異步移除存儲</button>
        <button @click="asyncLoacl">同步設(shè)置數(shù)據(jù)存儲</button>
        <button @click="chooseImsgs">上傳圖片</button>

        <navigator url="/pages/datail/datail">跳轉(zhuǎn)詳情頁面</navigator>
        <navigator url="/pages/message/message" open-type="switchTab">跳轉(zhuǎn)tabar頁面</navigator>
        <navigator url="/pages/datail/datail" open-type="redirect">跳轉(zhuǎn)(沒有箭頭返回)</navigator>
        <button @click="goUrls">編程導(dǎo)航,點(diǎn)擊跳轉(zhuǎn)</button>
        <button @click="messUrs">編程導(dǎo)航,跳轉(zhuǎn)taber頁面</button>
        <button @click="deatisur">編程導(dǎo)航,跳轉(zhuǎn)詳情,關(guān)閉當(dāng)前頁面</button>

        <!-- #ifdef H5 -->
        <view>在h5可見(條件編譯)</view>
        <!-- #endif -->
        <!-- #ifdef MP-WEIXIN -->
        <view>在小程序中可見(條件編譯)</view>
        <!-- #endif -->



    </view>
</template>

<script>
    //引入一個(gè)組件
    import test from '../../components/test.vue'
    import testa from '../../components/a.vue'
    import testb from '../../components/b.vue'

    //下載導(dǎo)入日歷組件
    import uniCalendar from '../../components/uni-calendar/uni-calendar.vue'


    export default {
        components: {
            testList: test,
            testa,
            testb,
            uniCalendar,
        },
        data() {
            return {
                msg: 'msg(父組件)',
                title: '允許選中',
                imgArrs: [],
                num: '',
            }
        },
        //監(jiān)聽頁面下拉刷新
        onPullDownRefresh: function() {
            console.log('觸發(fā)了下拉刷新')
            setTimeout(() => {
                console.log('延遲下拉刷新')
                uni.stopPullDownRefresh()
            }, 2000)
        },
        //監(jiān)聽頁面上拉加載
        onReachBottom: function() {
            console.log('頁面觸底了')
        },
        onLoad(options) {
            // #ifdef H5
            console.log('h5打印')
            // #endif
            // #ifdef MP-WEIXIN
            console.log('微信打印')
            // #endif


            console.log('頁面加載')
            console.log('可以獲取上個(gè)頁面?zhèn)鬟f的參數(shù)', options)
        },
        onShow: function() {
            console.log('頁面顯示了')
        },
        onReady: function() {
            console.log('頁面初次加載完成')
        },
        onHide: function() {
            console.log('頁面隱藏了')
        },
        methods: {
              change(e) {
                        console.log(e);
                    },
            but(n, e) {
                console.log(n, e)
            },
            //點(diǎn)擊刷新方法:
            pull() {
                uni.startPullDownRefresh()
            },
            //發(fā)送數(shù)據(jù)請求:
            getUrls() {
                uni.request({
                    url: 'https://api.apiopen.top/getJoke?page=1&count=2&type=video',
                    success(res) {
                        console.log(res)
                    }
                })
            },
            //設(shè)置存儲數(shù)據(jù)
            setSlosge() {
                uni.setStorage({
                    key: 'id',
                    data: 80,
                    success() {
                        console.log('存儲成功')
                    }
                })
            },
            //獲取數(shù)據(jù)
            getSlosge() {
                uni.getStorage({
                    key: 'id',
                    success(res) {
                        console.log('獲取成功', res)
                    }
                })
            },
            //移除存儲:
            removeSlosge() {
                uni.removeStorage({
                    key: 'id',
                    success() {
                        console.log('刪除成功')
                    }
                })
            },
            //同步設(shè)置存儲
            asyncLoacl() {
                //設(shè)置
                uni.setStorageSync('num', 101)
                //獲取
                const res1 = uni.getStorageSync('num')
                console.log(res1)
                //刪除
                setTimeout(() => {
                    uni.removeStorageSync('num')
                }, 2000)

            },
            //上傳圖片:
            chooseImsgs() {
                uni.chooseImage({
                    count: 5, //h5中限制不住
                    success: res => {
                        console.log(res)
                        this.imgArrs = res.tempFilePaths
                    }
                })

            },
            //點(diǎn)擊圖片預(yù)覽:
            perivImgs(current) {
                console.log(current)
                uni.previewImage({
                    current,
                    urls: this.imgArrs,
                    indicator: 'number'
                })

            },
            //編程導(dǎo)航點(diǎn)擊跳轉(zhuǎn)
            goUrls() {

                uni.navigateTo({
                    url: '/pages/datail/datail?id=80'
                })
            },
            //編程導(dǎo)航跳轉(zhuǎn)tabar
            messUrs() {
                uni.switchTab({
                    url: '/pages/message/message'
                })

            },
            //跳轉(zhuǎn)到詳情關(guān)閉當(dāng)前頁面
            deatisur() {
                uni.redirectTo({
                    url: '/pages/datail/datail'
                })
            },
            //獲取子組件數(shù)據(jù):
            getNums(num) {
                console.log(num)
                this.num = num
            }

        }


    }
</script>

<style>
    .content {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .logo {
        height: 200rpx;
        width: 200rpx;
        margin-top: 200rpx;
        margin-left: auto;
        margin-right: auto;
        margin-bottom: 50rpx;
    }

    /* #ifdef  H5*/
    .text-area {
        width: 750rpx;
        height: 1350rpx;
        background: red;
    }

    /* #endif */


    /* #ifdef  MP-WEIXIN*/
    .text-area {
        width: 750rpx;
        height: 1350rpx;
        background: #007AFF;
    }

    /* #endif */

    .title {
        font-size: 36rpx;
        color: #8f8f94;
    }

    .box-active {
        background: red;
    }
</style>

<template>
    <view>
        a組件{{num}}
        <button @click="addNums">修改B組件數(shù)據(jù)</button>
    </view>
</template>

<script>
    export default {
        data() {
            return {
             num:1
            }
        },
    
        beforeCreate() {
            
            
        },
        methods: {
        addNums(){
            uni.$emit('updateNum',10)
        }
        },
        created() {
        
            
        },
        mounted() {
        
        }
    }
</script>

<style>

</style>

<template>
    <view>
        b組件{{num}}
    </view>
</template>

<script>
    export default {
        data() {
            return {
            num:2
            }
        },
    
        beforeCreate() {
            
            
        },
        methods: {
        
        },
        created() {
            uni.$on('updateNum',num=>{
                this.num+=num
            })
        
            
        },
        mounted() {
        
        }
    }
</script>

<style>

</style>

<template>
    <view>
        test
        <text>父組件傳遞的數(shù)據(jù):{{title}}</text>
        <button @click="dataFuter()">點(diǎn)擊(給父組件傳數(shù)據(jù))</button>
    </view>
</template>

<script>
    export default {
        data() {
            return {
                nums:68
                
            }
        },
        props:['title'],
        beforeCreate() {
            console.log('組件初始化')
            
        },
        methods: {
            dataFuter(){
                //定義自定義事件
            this.$emit('myEdits',this.nums)
            }
            
        },
        created() {
                console.log('數(shù)據(jù)')
            
        },
        mounted() {
            console.log('demo')
        }
    }
</script>

<style>

</style>

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