Angular 4 allows you to assign unique colors to each row index in an HTML table

My goal is to dynamically change the colors of selected rows every time a button outside the table is clicked. I am currently utilizing the latest version of Angular.

While I am familiar with setting row colors using CSS, I am uncertain about how to manipulate the CSS class programmatically in TypeScript.

.ui-table .ui-table-tbody > tr:nth-child(1) {
    background-color: #2DA449; 
}

Is there a method to modify the CSS class in TypeScript in order to specify the child index and background color?

angulartypescript

Answer №1

Using Typescript

export class DecoratorExample{
    elements:any[];
    modifyElements(){
    // Here I am simply altering the properties of the first element, but you can customize this logic as needed 
    this.elements[0].style ="#ddd";
    }
}

HTML Integration

<button (click)="modifyElements()">Adjust styles<button/>
<table>
  <tr *ngFor="let element in elements;let i=index" [style.color]="element.style">
    ...
  </tr>
</table>

You can refer to additional resources at https://angular.io/guide/template-syntax#binding-targets

Answer №2

Just include ngClass in your code :

<td [ngClass]="{'selected': checkSelected(i)}"> // make sure checkSelected returns a boolean value

SEE IT IN ACTION HERE

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