如何转换递归Java脚本逻辑到打字原稿/角

问题描述 投票:-1回答:1

我有下面的JavaScript递归逻辑其中i要实现在角度相同的

var dictionary = {
    'Key1': '1',
    'Key2': {
        'a' : '2',
        'b' : '3',
        'c' : {
            'd' : '3',
            'e' : '1'
        }
    }
}
function flattenDictionary(dictionary) {
    var flattenedDictionary = {};

    function flattenDitionaryHelper(dictionary, propName) {
        if (typeof dictionary != 'object') {
            flattenedDictionary[propName] = dictionary;
            return;
        }
        for (var prop in dictionary) {
            if (propName == ''){
                flattenDitionaryHelper(dictionary[prop], propName+prop);
            } else {
                flattenDitionaryHelper(dictionary[prop], propName+'.'+prop);
            }
        }
    }

    flattenDitionaryHelper(dictionary, '');
    return flattenedDictionary;
}
flattenDictionary(dictionary);

我所做的是

public flatStruct(struc) {
   this.flatDictionary = {};


   let propName;
   let description;
   if(typeof struc != 'object'){
     this.flatDictionary[propName] = struc;
     console.log(this.flatDictionary);
   }
   for(var prop in struc){
     if(propName=''){
       description = struc[prop];
       console.log(description);

     }
   }


}

ngOnInit() {

  this.flatStruct(this.dict);

}

但我坚持一些在那里,我无法得到控制台日志也是第一次尝试,我能够后来获得初始登录我我无法获取数据

javascript angular typescript
1个回答
1
投票

干得好。在打字稿你可以通过替代this调用方法分离的嵌套函数。

export class AppComponent implements OnInit, OnDestroy {

  private flattenedDictionary = {};

  ngOnInit(): void {
    this.go();
  }

  ngOnDestroy(): void {}


  private go(): void {
    const dictionary = {
      'Key1': '1', 'Key2': {
        'a': '2', 'b': '3', 'c': {
          'd': '3', 'e': '1'
        }
      }
    };

    this.flattenDictionary(dictionary);

    console.log(this.flattenedDictionary);
  }

  flattenDictionary(dictionary): any {
    this.flattenDictionaryHelper(dictionary, '');
  }

  flattenDictionaryHelper(dictionary, propName): void {
    if (typeof dictionary !== 'object') {
      this.flattenedDictionary[propName] = dictionary;
      return;
    }
    for (const prop in dictionary) {
      if (propName === '') {
        this.flattenDictionaryHelper(dictionary[prop], propName + prop);
      } else {
        this.flattenDictionaryHelper(dictionary[prop], propName + '.' + prop);
      }
    }
  }
}
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