小程序图片上传，长按删除,weui

<view class="weui-cells"> <view class="weui-cell"> <view class="weui-cell__bd"> <view class="weui-uploader"> <view class="weui-uploader__hd"> <view class="weui-uploader__title">图片上传</view> <view class="weui-uploader__info">{{files.length}} / </view> </view> <view class="weui-uploader__bd"> <view class="weui-uploader__files" id="uploaderFiles"> <block wx:for="{{files}}" wx:key="*this"> <view class="weui-uploader__file" bindtap="previewImage" bindlongpress="deleteImage" id="{{item}}" data-index="{{index}}"> <image class="weui-uploader__img" src="{{item}}" mode="aspectFill"/> </view> </block> </view> <view wx:if="{{files.length < 9}}" class="weui-uploader__input-box" > <view class="weui-uploader__input" bindtap="chooseImage"></view> </view> </view> </view> </view> </view>
</view>

Page({
data: {
files: []
},
chooseImage: function(e) {
var that = this; var images = that.data.files;
wx.chooseImage({
count: - images.length,
sizeType: ['original', 'compressed'],
sourceType: ['album', 'camera'],
success: function(res) {
// 返回选定照片的本地文件路径列表，tempFilePath可以作为img标签的src属性显示图片
that.setData({
files: that.data.files.concat(res.tempFilePaths)
});
}
})
},
previewImage: function(e) {
wx.previewImage({
current: e.currentTarget.id,
urls: this.data.files
})
},
deleteImage: function(e) {
var that = this; var images = that.data.files; var index = e.currentTarget.dataset.index; //获取当前长按图片下标
wx.showModal({
title: '系统提醒',
content: '确定要删除此图片吗？',
success: function(res) {
if (res.confirm) {
images.splice(index, );
} else if (res.cancel) {
return false;
}
that.setData(
files: images
});
}
})
}
})