对整个el-tree的节点进行禁用

treeData: [...]

function loopMuduleTreeDisabled (arr, that) {
  arr.forEach((item) => {
    that.$set(item, 'disabled', true)
    if (item.children && item.children.length > 0) {
      loopMuduleTreeDisabled(item.children, that)
    }
  })
}

loopMuduleTreeDisabled(this.treeData, this)