需要lodash

    1. //data 需要过滤的数据 keyword搜索关键字
    2. //data 中要有title 和 key 属性 title就是展示值和keyword匹配的值
    3. import {treeFilter} from '@/lib/TreeFilter'
    5. let newData= treeFilter(data,keyword)
    1. // 过滤函数
    2. function _filterFn(data, filterText) {
    3.     return !filterText || data.title.indexOf(filterText) > -1;
    4. }
    6. function _checkedFn(node, checkedList) {
    7.     return checkedList && checkedList.indexOf(node.key) > -1
    8. }
    10. function _treeFilter(nodes, filterText, checkedList) {
    11.     if (!(nodes && nodes.length)) {
    12.         return;
    13.     }
    15.     const newChildren = [];
    16.     // eslint-disable-next-line no-restricted-syntax
    17.     for (const node of nodes) {
    18.         if (_filterFn(node, filterText) || _checkedFn(node, checkedList)) {
    19.             const _node = {...node};
    20.             // _node.children = _treeFilter(_node.children, filterText);
    21.             newChildren.splice(newChildren.length, 0, _node);
    22.         } else {
    23.             const children = _treeFilter(node.children, filterText, checkedList);
    24.             if (children && children.length) {
    25.                 const _node = {...node};
    26.                 _node.children = children;
    27.                 newChildren.splice(newChildren.length, 0, _node);
    28.             }
    29.         }
    30.     }
    31.     return newChildren;
    32. }
    34. export function treeFilter(nodes, filterText, checkedList) {
    35.     if (!filterText) {
    36.         return nodes
    37.     }
    39.     if (checkedList && checkedList.length && _.isObject(checkedList[0])) {
    40.         checkedList = _.map(checkedList, node => node.key);
    41.     }
    43.     return _treeFilter(nodes, filterText, checkedList);
    44. }