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1、依据字段判断是否禁用

const handData = (array, level?) => {array.forEach((item) => {if (level === 0) {//获取一级菜单item.title = item.levelName;item.value = item.code;if (item.type == 'LAYER') {item.disabled = true;} else if (item.type == 'JOB') {item.disabled = false;}}if (item.child != null) {//获取二级菜单item.children = [...item.child];item.children.map((res) => {res.title = res.levelName;res.value = res.code;if (res.type == 'LAYER') {res.disabled = true;} else if (res.type == 'JOB') {res.disabled = false;}});handData(item.child); //递归遍历，获取后续菜单如三级菜单}});treeData.value = array;};getPostTree().then((res) => {handData(res, 0);});

2、依据层级判断是否禁用，（这里做一二级禁用，第三级放开）

const handData3 = (array, level?) => {array.forEach((item) => {if (level === 0) {//获取一级菜单item.title = item.levelName;item.value = item.code;}if (item.child != null) {//获取二级菜单item.children = [...item.child];item.children.map((res) => {res.title = res.levelName;res.value = res.code;item.disabled = true;});handData3(item.child, level + 1); //递归遍历，获取后续菜单如三级菜单} else if (item.child == null && level == 1) {item.disabled = true;}});treeData3.value = array;};

3、效果图