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Empty/1.png
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Empty/README.md
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# 1. 前言
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在日常开发中,页面上肯定有展示数据的需求,但是当某些时候该展示数据的地方此时数据为空时,就会留下一片空白,对用户体验不是很好,那么接下来我们就封装一个空数据时的占位展示图,告诉用户此时用户为空,并非数据没有加载出来,不用让用户盲目的等待。
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# 2. 使用示例
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该组件可以直接引入到项目中使用,示例如下:
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```vue
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<template>
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<div id="app">
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<div v-if="content.length"></div>
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<Empty v-else></Empty>
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</div>
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</div>
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</template>
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<script>
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import Empty from './Empty'
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export default {
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name: 'app',
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components: { Empty},
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data() {
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return {
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content:[]
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}
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}
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}
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</script>
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```
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在上面代码中,假设你需要展示的内容是`content`,那么你就可以判断当内容有值时展示内容,当内容为空时展示空数据时的占位展示图。效果如下:
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# 3. 组件可选属性
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该组件除了可以直接使用外,还提供过了一些可选属性供个性化配置,提供可选属性如下:
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| 属性名称 | 描述 | 类型 | 是否必须 | 默认值 |
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| :---------: | :------------------: | :----: | :------: | :------: |
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| description | 自定义描述内容 | String | 否 | 暂无数据 |
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| image | 自定义显示图片的路径 | String | 否 | 默认图片 |
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| imageStyle | 自定义显示图片的样式 | Object | 否 | - |
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组件提供了3个可选属性,你可以这样去使用它们:
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- 自定义描述内容
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```html
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<Empty description="我是自定义内容"></Empty>
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```
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- 显示自定义图片
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```html
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<Empty description="显示网络图片" image="https://www.baidu.com/img/bd_logo1.png"></Empty>
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```
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```javascript
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<Empty description="显示项目资源图片" :image="require('@/assets/images/warn.png')"></Empty>
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```
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- 自定义显示图片样式
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```html
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<template>
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<Empty
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description="显示网络图片"
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image="https://www.baidu.com/img/bd_logo1.png"
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:imageStyle="imageStyle">
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</Empty>
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</template>
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<script>
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data() {
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return {
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imageStyle:{
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width:'10px'
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}
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}
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</script>
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```
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# 4. 组件代码
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完整代码请戳☞[Vue-Components-Library/Empty](https://github.com/NLRX/Vue-Components-Library/tree/master/Empty)
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(完)
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Empty/index.vue
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<template>
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<div class="empty">
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<div class="image">
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<img :alt="description" :src="image" v-if="image" :style="imageStyle"/>
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<svg v-else width="184" height="152" viewBox="0 0 184 152" xmlns="http://www.w3.org/2000/svg">
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<g fill="none" fillRule="evenodd">
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<g transform="translate(24 31.67)">
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<ellipse fillOpacity=".8" fill="#F5F5F7" cx="67.797" cy="106.89" rx="67.797" ry="12.668" />
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<path
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d="M122.034 69.674L98.109 40.229c-1.148-1.386-2.826-2.225-4.593-2.225h-51.44c-1.766 0-3.444.839-4.592 2.225L13.56 69.674v15.383h108.475V69.674z"
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fill="#AEB8C2"
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/>
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<path
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d="M101.537 86.214L80.63 61.102c-1.001-1.207-2.507-1.867-4.048-1.867H31.724c-1.54 0-3.047.66-4.048 1.867L6.769 86.214v13.792h94.768V86.214z"
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fill="url(#linearGradient-1)"
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transform="translate(13.56)"
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/>
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<path
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d="M33.83 0h67.933a4 4 0 0 1 4 4v93.344a4 4 0 0 1-4 4H33.83a4 4 0 0 1-4-4V4a4 4 0 0 1 4-4z"
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fill="#F5F5F7"
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/>
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<path
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d="M42.678 9.953h50.237a2 2 0 0 1 2 2V36.91a2 2 0 0 1-2 2H42.678a2 2 0 0 1-2-2V11.953a2 2 0 0 1 2-2zM42.94 49.767h49.713a2.262 2.262 0 1 1 0 4.524H42.94a2.262 2.262 0 0 1 0-4.524zM42.94 61.53h49.713a2.262 2.262 0 1 1 0 4.525H42.94a2.262 2.262 0 0 1 0-4.525zM121.813 105.032c-.775 3.071-3.497 5.36-6.735 5.36H20.515c-3.238 0-5.96-2.29-6.734-5.36a7.309 7.309 0 0 1-.222-1.79V69.675h26.318c2.907 0 5.25 2.448 5.25 5.42v.04c0 2.971 2.37 5.37 5.277 5.37h34.785c2.907 0 5.277-2.421 5.277-5.393V75.1c0-2.972 2.343-5.426 5.25-5.426h26.318v33.569c0 .617-.077 1.216-.221 1.789z"
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fill="#DCE0E6"
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/>
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</g>
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<path
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d="M149.121 33.292l-6.83 2.65a1 1 0 0 1-1.317-1.23l1.937-6.207c-2.589-2.944-4.109-6.534-4.109-10.408C138.802 8.102 148.92 0 161.402 0 173.881 0 184 8.102 184 18.097c0 9.995-10.118 18.097-22.599 18.097-4.528 0-8.744-1.066-12.28-2.902z"
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fill="#DCE0E6"
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/>
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<g transform="translate(149.65 15.383)" fill="#FFF">
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<ellipse cx="20.654" cy="3.167" rx="2.849" ry="2.815" />
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<path d="M5.698 5.63H0L2.898.704zM9.259.704h4.985V5.63H9.259z" />
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</g>
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</g>
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</svg>
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</div>
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<p class="description">{{description}}</p>
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</div>
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</template>
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<script>
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export default {
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name: 'Empty',
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props:{
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description:{
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required: false,
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type: String,
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default:'暂无数据'
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},
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image:{
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required: false,
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type: String,
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},
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imageStyle: {
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required: false,
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type: Object
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},
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},
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data() {
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return {
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}
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},
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}
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</script>
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<style scoped>
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.empty {
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margin: 0 8px;
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font-size: 14px;
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line-height: 22px;
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text-align: center;
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}
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.image {
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height: 100px;
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margin-bottom: 8px;
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}
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.image img{
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height: 100%;
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}
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.image svg{
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height: 100%;
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margin: auto;
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}
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.description {
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margin: 0;
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color:rgba(0,0,0,0.5)
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}
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</style>
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