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 | | <template> |  |   <view class="tn-collapse-class tn-collapse"> |  |     <slot></slot> |  |   </view> |  | </template> |  |   |  | <script> |  |   export default { |  |     name: 'tn-collapse', |  |     props: { |  |       // 是否为手风琴 |  |       accordion: { |  |         type: Boolean, |  |         default: true |  |       }, |  |       // 头部样式 |  |       headStyle: { |  |         type: Object, |  |         default() { |  |           return {} |  |         } |  |       }, |  |       // 主题样式 |  |       bodyStyle: { |  |         type: Object, |  |         default() { |  |           return {} |  |         } |  |       }, |  |       // 每一个item的样式 |  |       itemStyle: { |  |         type: Object, |  |         default() { |  |           return {} |  |         } |  |       }, |  |       // 显示箭头 |  |       arrow: { |  |         type: Boolean, |  |         default: true |  |       }, |  |       // 箭头颜色 |  |       arrowColor: { |  |         type: String, |  |         default: '#AAAAAA' |  |       }, |  |       // 点击标题栏时的按压样式 |  |       hoverClass: { |  |         type: String, |  |         default: 'tn-hover' |  |       } |  |     }, |  |     computed: { |  |       parentData() { |  |         return [this.headStyle, this.bodyStyle, this.itemStyle, this.arrow, this.arrowColor, this.hoverClass] |  |       } |  |     }, |  |     data() { |  |       return { |  |          |  |       } |  |     }, |  |     watch: { |  |       parentData() { |  |         // 如果父组件的参数发生变化重新初始化子组件的信息 |  |         if (this.childrens.length > 0) { |  |           this.init() |  |         } |  |       } |  |     }, |  |     created() { |  |       this.childrens = [] |  |     }, |  |     methods: { |  |       // 重新初始化内部所有子元素计算高度,异步获取数据时重新渲染 |  |       init() { |  |         this.childrens.forEach((child, index) => { |  |           child.init() |  |         }) |  |       }, |  |       // collapseItem被点击时由collapseItem调用父组件 |  |       onChange() { |  |         let activeItem = [] |  |         this.childrens.forEach((child, index) => { |  |           if (child.isShow) { |  |             activeItem.push(child.nameSync) |  |           } |  |         }) |  |         // 如果时手风琴模式,只有一个匹配结果,即activeItem长度为1 |  |         if (this.accordion) activeItem = activeItem.join(',') |  |         this.$emit('change', activeItem) |  |       } |  |     } |  |   } |  | </script> |  |   |  | <style lang="scss" scoped> |  | </style> | 
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