直接上代码
实现功能为：当fbphotoFirst为空时，src路径为“pic/信息反馈1-1_14.png“，并且点击事件uploadfbphotoFirst有效，否则为路径fbphotoFirst，此时点击事件uploadfbphotoFirst无效，uploadfbphotoFirst为上传图片的方法，即上传图片成功后不支持修改
<image class="uploadimageclass"
bindtap="{{fbphotoFirst==''?'uploadfbphotoFirst':''}}" mode="aspectFit" src="{{fbphotoFirst==''?'pic/信息反馈1-1_14.png':fbphotoFirst}}"></image>
<image class="uploadimageclass"
bindtap="uploadfbphotoSecend" mode="aspectFit" src="{{fbphotoFirst==''?'pic/信息反馈1-1_14.png':fbphotoSecend}}"></image>
<image class="uploadimageclass"
bindtap="uploadfbphotothird" mode="aspectFit" src="{{fbphotoFirst==''?'pic/信息反馈1-1_14.png':fbphotothird}}"></image>
等效于以下代码
<!--<view wx:if="{{fbphotoFirst==''}}">
<image class="uploadimageclass" bindTap="uploadfbphotoFirst" src="../../../image/信息反馈/信息反馈1-1_14.png"></image></view>
<view wx:else> <image class="uploadimageclass" bindTap="uploadfbphotoFirst" src="{{fbphotoFirst}}"></image></view>
<view wx:if="{{fbphotoFirst==''}}">
<image class="uploadimageclass" bindTap="uploadfbphotoSecend" src="../../../image/信息反馈/信息反馈1-1_14.png"></image></view>
<view wx:else> <image class="uploadimageclass" bindTap="uploadfbphotoSecend" src="{{fbphotoSecend}}"></image></view>
<view wx:if="{{fbphotoFirst==''}}">
<image class="uploadimageclass" bindTap="uploadfbphotothird" src="../../../image/信息反馈/信息反馈1-1_14.png"></image></view>
<view wx:else> <image class="uploadimageclass" bindTap="uploadfbphotothird" src="{{fbphotothird}}"></image></view>-->