I have utilized the angular material table following this example.
https://stackblitz.com/angular/jejeknenmgr?file=src%2Fapp%2Ftable-basic-example.ts
In this case, I modified the heading color with the following CSS code.
.mat-header-cell {
background: red;
}
My goal is to set the heading color dynamically from the component rather than using static CSS. Is there a way to achieve this dynamically?
To implement this technique, one can utilize Css Var and dynamically modify variable value within the component.
Css
.mat-header-cell {
background: var(--background-color)
}
Component
export class AppComponent {
constructor()
changeColor() {
// set new color here
document.documentElement.style.setProperty(`--background-color`, 'red');
}
}
By altering the variable in CSS, the browser will automatically update the value in the .mat-header-cell class.
Alternatively, one can apply inline styles using the background-color attribute on each mat-header-cell item.
In html
<ng-container matColumnDef="position">
<th mat-header-cell *matHeaderCellDef [style.background-color]="color"> No. </th>
<td mat-cell *matCellDef="let element"> {{element.position}} </td>
</ng-container>
In component
export class TableBasicExample {
displayedColumns: string[] = ['position', 'name', 'weight', 'symbol'];
dataSource = ELEMENT_DATA;
color = 'green'
changeColor() {
this.color = 'red';
}
}
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