“ngfor Index” Code-Antworten

ngfor Index

<ul>
    <li *ngFor="let item of items; let i = index" [attr.data-index]="i">
        {{item}}
    </li>
</ul>
2 Programmers 1 Bug

So erhalten Sie Index für NGFOR

*ngFor="let item of items; index as i;" 
// OR
*ngFor="let item of items; let i = index;"
// i will be the index, starting from 0 
// and you can show it in the string interpolation with {{ i }}
Joyous Jellyfish

ngfor Index

<ul>
    <li *ngFor="let item of items; index as i">
        {{item}}
    </li>
</ul>
Magnificent Markhor

ngfor Index

<ul>
  <li *ngFor="let food of menu; index as i">
      {{ index }},{{ food }}
  </li>
</ul>
<!-- index starts from 0 
This gives an undordered list of food items in a menu, with the first item as 0-->
Sad Santa

ngfor Index

<ul>
    <li *ngFor="let item of items; let i = index" [attr.data-index]="i">
        {{item}}
        {{i}}
    </li>
</ul>
Bade_Mia

Index in ng für

You have to use let to declare the value rather than #.

<ul>
    <li *ngFor="let item of items; let i = index" [attr.data-index]="i">
        {{item}}
    </li>
</ul>
Angular = 1
<ul>
    <li *ngFor="#item of items; #i = index" [attr.data-index]="i">
        {{item}}
    </li>
</ul>
Adorable Anteater

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