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21 lines
893 B
JavaScript
21 lines
893 B
JavaScript
/**
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* 构造树型结构数据
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* @param {*} source 数据源
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* @param {*} id id字段 默认 'id'
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* @param {*} parentId 父节点字段 默认 'parentId'
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* @param {*} children 孩子节点字段 默认 'children'
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* @param {*} rootId 根Id 默认 0
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*/
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export function treeData (source, id, parentId, children, rootId) {
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id = id || 'id'
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parentId = parentId || 'parentId'
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children = children || 'children'
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rootId = rootId || 0
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const cloneData = JSON.parse(JSON.stringify(source))// 对源数据深度克隆
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return cloneData.filter(father => {
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const branchArr = cloneData.filter(child => father[id] === child[parentId])// 返回每一项的子级数组
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branchArr.length > 0 ? father[children] = branchArr : delete father[children]// 如果存在子级，则给父级添加一个children属性，并赋值
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return father[parentId] === rootId // 返回第一层
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})
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}
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