Question

我想在角度打字稿中使用数组到树的npm模块。我尝试了import * as arraytotree from 'array-to-tree';，并尝试使用构造函数console.log(arraytotree(this.dataOne));。

但是我在控制台中遇到错误 ERROR 错误：arraytotree不是函数

slack

请帮助

Answer 1

请尝试这个

import * as arrayToTree from 'array-to-tree';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent {

  dataOne = [
    {
      id: 1,
      name: 'Portfolio',
      parent_id: undefined
    },
    {
      id: 2,
      name: 'Web Development',
      parent_id: 1
    },
    {
      id: 3,
      name: 'Recent Works',
      parent_id: 2
    },
    {
      id: 4,
      name: 'About Me',
      parent_id: undefined
    }
  ];

  data = arrayToTree(this.dataOne);

  constructor() {
    console.log(this.data );
  }
}

package.json

"array-to-tree": "^3.3.0"

注意：：如果不将arrayToTree（this.dataOne）的结果分配给变量，则打字稿将引发错误

[ts] Function implementation is missing or not immediately following the declaration.
(method) AppComponent.arrayToTree(this: any, dataOne: any): any

无法在angular4中使用数组到树的npm模块

1 个答案: