Code to hide value in drop-down

In your component code, retrieve the dropdown values from the backend response and assign them to a variable. Let's assume you have the following array of values:

dropdownValues: string[] = ['Mango', 'Apple', 'Orange'];

Create a new variable to store the filtered dropdown values, excluding the first value:

filteredDropdownValues: string[] = this.dropdownValues.slice(1);

In your template, bind the filteredDropdownValues variable to the dropdown element using ngFor:

  {{ value }}

the first value, "Mango," is excluded from the filteredDropdownValues array, and the remaining values are displayed in the dropdown box.