如何更改所选值的背景色黑色为蓝色,为更好地理解,请参见下图:-
我的代码:-
<select class="drop_select_none" (change)="customer_item($event.target.value)">
<option value="0">--{{'Select_customer' | translate}}--</option>
<option *ngFor="let cust of customer;" [value]="cust | json">{{cust.first_name}}
</option>
</select>