详解Angular2 关于*ngFor 嵌套循环

在项目开发中拿到的数据是这样的，要循环遍历出来。可是在ng2中好像不能直接遍历Object

 datas: any = [
  { num: 1, date: "2017-04-12", sellNum: "1231234", sellMpney: "1233", returnNum: "24"},
  { num: 1, date: "2017-04-12", sellNum: "1231234", sellMpney: "1233", returnNum: "24"},
  { num: 1, date: "2017-04-12", sellNum: "1231234", sellMpney: "1233", returnNum: "24"},
  { num: 1, date: "2017-04-12", sellNum: "1231234", sellMpney: "1233", returnNum: "24"},
  { num: 1, date: "2017-04-12", sellNum: "1231234", sellMpney: "1233", returnNum: "24"},
  { num: 1, date: "2017-04-12", sellNum: "1231234", sellMpney: "1233", returnNum: "24"},
  { num: 1, date: "2017-04-12", sellNum: "1231234", sellMpney: "1233", returnNum: "24"},
 ];

在搜索之后发现了这种方法可以实现。

array-ngfor.ts

import { Component } from '@angular/core';

@Component({
 selector: 'page-array-ngfor',
 templateUrl: 'array-ngfor.html',
})
export class ArrayNgfor {

 constructor() { }

 datas: Array = [
  { num: 1, date: "2017-04-12", sellNum: "1231234", sellMpney: "1233", returnNum: "24" },
  { num: 1, date: "2017-04-12", sellNum: "1231234", sellMpney: "1233", returnNum: "24" },
  { num: 1, date: "2017-04-12", sellNum: "1231234", sellMpney: "1233", returnNum: "24" },
  { num: 1, date: "2017-04-12", sellNum: "1231234", sellMpney: "1233", returnNum: "24" },
  { num: 1, date: "2017-04-12", sellNum: "1231234", sellMpney: "1233", returnNum: "24" },
  { num: 1, date: "2017-04-12", sellNum: "1231234", sellMpney: "1233", returnNum: "24" },
  { num: 1, date: "2017-04-12", sellNum: "1231234", sellMpney: "1233", returnNum: "24" },
 ];

 getKeys(item) {
  return Object.keys(item);
 }
}

array-ngfor.html

 
  关于ngfor 嵌套循环
 



 
   {{ item[key] }}
 

重点的是这个方法

 getKeys(item){
    return Object.keys(item);
  }

结果：

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