将本地图片用作小程序背景的有效方式

<view class="root">

  <image class=&#39;background-image&#39; src=&#39;../res/login_bg.png&#39; mode="aspectFill"></image>

  <view class="content">

  </view>

</view>

.root {

   width: 100%;

    height: 100%;

    background-color: #70c7da;

    position: relative;

}

.background-image{

   height : 100%;

    position: absolute;

    width: 100%;

    left: 0px;

    top: 0px;

}

.content{

    position: absolute;

    width: 100%;

    height: 100%;

    left: 0px;

    top: 0px;

}