<view class="img-v">
 <view class="img" wx:for="{{imgs}}" wx:for-item="item" wx:key="*this">
 <image src="{{item}}" data-index="{{index}}" mode="aspectFill" bindtap="previewImg"></image>
 <view class="delete-btn" data-index="{{index}}" catchtap="deleteImg"></view>
 </view>
 <view class="upload-img-btn" bindtap="chooseImg"></view>
</view>

 data: {
 imgs: []
 },
// 上傳圖片
 chooseImg: function (e) {
 var that = this;
 var imgs = this.data.imgs;
 if (imgs.length >= 9) {
 this.setData({
 lenMore: 1
 });
 setTimeout(function () {
 that.setData({
 lenMore: 0
 });
 }, 2500);
 return false;
 }
 wx.chooseImage({
 // count: 1, // 默認9
 sizeType: ['original', 'compressed'], // 可以指定是原圖還是壓縮圖，默認二者都有
 sourceType: ['album', 'camera'], // 可以指定來源是相冊還是相機，默認二者都有
 success: function (res) {
 // 返回選定照片的本地文件路徑列表，tempFilePath可以作為img標簽的src屬性顯示圖片
 var tempFilePaths = res.tempFilePaths;
 var imgs = that.data.imgs;
 // console.log(tempFilePaths + '----');
 for (var i = 0; i < tempFilePaths.length; i++) {
 if (imgs.length >= 9) {
 that.setData({
 imgs: imgs
 });
 return false;
 } else {
 imgs.push(tempFilePaths[i]);
 }
 }
 // console.log(imgs);
 that.setData({
 imgs: imgs
 });
 }
 });
 },
 // 刪除圖片
 deleteImg: function (e) {
 var imgs = this.data.imgs;
 var index = e.currentTarget.dataset.index;
 imgs.splice(index, 1);
 this.setData({
 imgs: imgs
 });
 },
 // 預覽圖片
 previewImg: function (e) {
 //獲取當前圖片的下標
 var index = e.currentTarget.dataset.index;
 //所有圖片
 var imgs = this.data.imgs;
 wx.previewImage({
 //當前顯示圖片
 current: imgs[index],
 //所有圖片
 urls: imgs
 })
 }