使用ngFor的角度动态表

时间:2018-03-26 12:54:09

标签: html angular ngfor

我想知道是否可以从JSON数据创建动态HTML表。列和标头的数量应根据JSON中的键进行更改。例如,这个JSON应该创建这个表:

{
     color: "green", code: "#JSH810"
 }

 ,
 {
     color: "red", code: "#HF59LD"
 }

 ...

enter image description here

这个JSON应该创建这个表:

{
    id: "1", type: "bus", make: "VW", color: "white"
}

,
{
    id: "2", type: "taxi", make: "BMW", color: "blue"
}

...

enter image description here

这必须是100%动态的,因为我想显示数百个不同的JSON对象,因此HTML页面中不应该对任何内容进行硬编码。

2 个答案:

答案 0 :(得分:8)

如果您希望将对象的键作为表格的头部,则应创建custom pipe

import { PipeTransform, Pipe } from '@angular/core';

@Pipe({name: 'keys'})
export class KeysPipe implements PipeTransform {
  transform(value, args:string[]) : any {
    let keys = [];
    for (let key in value) {
      keys.push(key);
    }
    return keys;
  }
}

现在进入你的html模板:

<table>
  <thead>
    <tr>           
      <th *ngFor="let head of items[0] | keys">{{head}}</th>
    </tr>
  </thead>
  <tbody>
    <tr *ngFor="let item of items">           
      <td *ngFor="let list of item | keys">{{item[list]}}</td>
    </tr>
  </tbody>
</table>

更新:这是demo

答案 1 :(得分:0)

这可以提供帮助:

export class AppComponent {
 //Array of any value
  jsonData:any = [
    {id: "1", type: "bus", make: "VW", color: "white"},
    {id: "2", type: "taxi", make: "BMW", color: "blue"}
  ];
  _object = Object;
}
<div>
  <table border="1">
    <thead>
      <tr>
        <th *ngFor="let header of _object.keys(jsonData[0]); let i = index">{{header}}</th>
      </tr>
    </thead>
    <tbody>
      <tr *ngFor="let row of jsonData; let i = index">
        <th *ngFor="let objKey of _object.keys(row); let j = index">{{ row[objKey] }} </th>
      </tr>
    </tbody>
  </table>
</div>