根据子节点匹配出树形结构的路径

/* 递归匹配菜单路径 */
        recursionMenu: function(recursionField = '', menu = []) {
            let menuTree = {
                title: '首页',
                url: '/pages/index',
                children: menu
            };
            let _menu = []; // 路径数组
            let findIt = false; // 是否匹配到
            let getPath = function(tree) {
                _menu.push({
                    title: tree.title,
                    path: tree.url
                });
                if (tree.title === recursionField) {
                    findIt = true;
                    return;
                }
                if (tree.children && tree.children.length > 0) {
                    for (let i = 0; i < tree.children.length; i++) {
                        getPath(tree.children[i]);
                        if (findIt) return;
                    }
                    _menu.pop();
                } else if (!tree.children || tree.children.length === 0) {
                    _menu.pop();
                }
            };
            getPath(menuTree);
            return _menu;
        }