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							- <template>
 
- 	<!-- #ifdef APP-NVUE -->
 
- 	<header>
 
- 	<!-- #endif -->
 
- 	<view
 
- 	    class="u-index-anchor u-border-bottom"
 
- 		:ref="`u-index-anchor-${text}`"
 
- 	    :style="{
 
- 			height: $u.addUnit(height),
 
- 			backgroundColor: bgColor
 
- 		}"
 
- 	>
 
- 		<text
 
- 		    class="u-index-anchor__text"
 
- 		    :style="{
 
- 				fontSize: $u.addUnit(size),
 
- 				color: color
 
- 			}"
 
- 		>{{ text }}</text>
 
- 	</view>
 
- 	<!-- #ifdef APP-NVUE -->
 
- 	</header>
 
- 	<!-- #endif -->
 
- </template>
 
- <script>
 
- 	import props from './props.js';
 
- 	// #ifdef APP-NVUE
 
- 	const dom = uni.requireNativePlugin('dom')
 
- 	// #endif
 
- 	/**
 
- 	 * IndexAnchor 列表锚点
 
- 	 * @description 
 
- 	 * @tutorial https://uviewui.com/components/indexList.html
 
- 	 * @property {String | Number}	text	列表锚点文本内容
 
- 	 * @property {String}			color	列表锚点文字颜色 ( 默认 '#606266' )
 
- 	 * @property {String | Number}	size	列表锚点文字大小,单位默认px ( 默认 14 )
 
- 	 * @property {String}			bgColor	列表锚点背景颜色 ( 默认 '#dedede' )
 
- 	 * @property {String | Number}	height	列表锚点高度,单位默认px ( 默认 32 )
 
- 	 * @example <u-index-anchor :text="indexList[index]"></u-index-anchor>
 
- 	 */
 
- 	export default {
 
- 		name: 'u-index-anchor',
 
- 		mixins: [uni.$u.mpMixin, uni.$u.mixin,props],
 
- 		data() {
 
- 			return {
 
- 			}
 
- 		},
 
- 		mounted() {
 
- 			this.init()
 
- 		},
 
- 		methods: {
 
- 			init() {
 
- 				// 此处会活动父组件实例,并赋值给实例的parent属性
 
- 				const indexList = uni.$u.$parent.call(this, 'u-index-list')
 
- 				if (!indexList) { 
 
- 					return uni.$u.error('u-index-anchor必须要搭配u-index-list组件使用')
 
- 				}
 
- 				// 将当前实例放入到u-index-list中
 
- 				indexList.anchors.push(this)
 
- 				const indexListItem = uni.$u.$parent.call(this, 'u-index-item')
 
- 				// #ifndef APP-NVUE
 
- 				// 只有在非nvue下,u-index-anchor才是嵌套在u-index-item中的
 
- 				if (!indexListItem) {
 
- 					return uni.$u.error('u-index-anchor必须要搭配u-index-item组件使用')
 
- 				}
 
- 				// 设置u-index-item的id为anchor的text标识符,因为非nvue下滚动列表需要依赖scroll-view滚动到元素的特性
 
- 				indexListItem.id = this.text
 
- 				// #endif
 
- 			}
 
- 		},
 
- 	}
 
- </script>
 
- <style lang="scss" scoped>
 
- 	@import "../../libs/css/components.scss";
 
- 	.u-index-anchor {
 
- 		position: sticky;
 
- 		top: 0;
 
- 		@include flex;
 
- 		align-items: center;
 
- 		padding-left: 15px;
 
- 		z-index: 1;
 
- 		&__text {
 
- 			@include flex;
 
- 			align-items: center;
 
- 		}
 
- 	}
 
- </style>
 
 
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