1. // 使用 checked_data 修改树节点的 勾选状态
    2. function renderTreeChecked(tree_data, checked_data) {
    3.     for (let node of tree_data) {
    4.         if (node.children) {
    5.             node.checked = checkTreeCheckedAll(node.children, checked_data);
    6.             renderTreeChecked(node.children, checked_data);
    7.         } else {
    8.             if (checked_data.includes(node.value)) {
    9.                 node.checked = true;
    10.             } else {
    11.                 node.checked = false;
    12.             }
    13.         }
    14.     }
    15. }
    16. // 检查树节点是否全选
    17. function checkTreeCheckedAll(
    18.     tree_data = [],
    19.     checked_data = [],
    20.     checked_all = true
    21. ) {
    22.     for (let node of tree_data) {
    23.         if (node.children) {
    24.             checked_all = checkTreeCheckedAll(node.children, checked_data);
    25.             if (!checked_all) break;
    26.         } else {
    27.             if (!checked_data.includes(node.value)) {
    28.                 checked_all = false;
    29.                 break;
    30.             }
    31.         }
    32.     }
    33.     return checked_all;
    34. }
    35. // 获取树形结构数组全部value值
    36. function getTreeAllValue(tree_data = [], values = []) {
    37.     for (let node of tree_data) {
    38.         if (node.children) {
    39.             getTreeAllValue(node.children, values);
    40.         } else {
    41.             values.push(node.value);
    42.         }
    43.     }
    44.     return values;
    45. }