<!-- v-for 后添加 :key='item' -->
<div id='login' v-for="img in imageList" :key="img" v-lazy:background-image="img">
<!-- login -->
</div>
vue-cli3 出现Elements in iteration expect to have 'v-bind:key' directives问题
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转载自blog.csdn.net/baidu_38760069/article/details/103899274
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