零角减速器和蓄能器

问题描述

在下面的代码中，我想做类似的事情

if (key === 'Almond Meal flour'){
continue
}

因此不会为此键创建任何对象/节点。我该怎么办？

    export class TodoItemNode {
      children: TodoItemNode[];
      item: string;
    }
    
    export class TodoItemFlatNode {
      item: string;
      level: number;
      expandable: boolean;
    }
    
    const TREE_DATA = {
      A: {
        'Almond Meal flour': null,'Organic eggs': null,'Protein Powder': null,Fruits: {
          Apple: null,Berries: ['BlueBerry','RaspBerry'],Orange: null
        }
      },B: {
        'Almond Meal flour': null,Orange: null
        }
      }
    };
    
    buildfiletree(obj: {[key: string]: any},level: number): TodoItemNode[] {
    return Object.keys(obj).reduce<TodoItemNode[]>((accumulator,key) => {
      // if (key === 'Almond Meal flour'){
      //   continue
      // }

      const value = obj[key];
      const node = new TodoItemNode();
      node.item = key;

      if (value != null) {
        if (typeof value === 'object') {
          node.children = this.buildfiletree(value,level + 1);
        } else {
          node.item = value;
        }
      }

      return accumulator.concat(node);
    },[]);
  }
  
  
  buildfiletree(TREE_DATA,0)

解决方法

简单

if (key === 'Almond Meal flour') {
        return accumulator;
}