Question

如何在angular2中设置动态ID？

我试过了

library(data.table)
setDT(df)[, list(P= mean(P)) , .(JB, Y)]

但它不起作用。

Answer 1

<div class = "CirclePoint" *ngFor="let c of circles" 
    [attr.id]="'Location' + c.id">
</div>

<div class = "CirclePoint" *ngFor="let c of circles" 
    attr.id="Location{{c.id}}">
</div>

<击> 对于id属性，这可能也有效（尚未尝试过）

<div class = "CirclePoint" *ngFor="let c of circles" [id]="'Location' + c.id"> </div>

<击>

Answer 2

这也将起作用：

<div class = "CirclePoint" *ngFor="let c of circles">
   <div [id]="c.id"></div>
</div>

如果要添加前缀，请说“ loc”；

<div class = "CirclePoint" *ngFor="let c of circles">
   <div [id]="'loc' + c.id"></div>
</div>

使用[]有助于动态添加值。

Answer 3

试试这个：

 <div class = "CirclePoint" *ngFor="let c of circles">
     <div id="location_{{c.id}}">write something which you want like c.x </div>
 </div>`

希望这对你有用。我搜索了StackOverflow，发现了这个answer。

Answer 4

在组件代码中，而不是通常的id="#c"使用[id]="#c"。这也适用于动态类名。见下面的例子：

<div class = "CirlePoit" *ngFor="#c of circles" [id] = "#c"> </div>

Answer 5

<块引用>

索引可以用作动态 ID

<div class="test" *ngFor="let item of data; let i = index">
<div class="function_div" (click)="test(i);">Test Button </div>
    {{item}}
</div>

如何在ionic2 / angular2中设置动态ID（* ngFor）？

5 个答案: