Answer by Just code for What is the alternative of [clearable] in ng-select

If you do [clearable]="false" it will disallow to clear the selection.

you can use css to hide the close icon. like this

.ng-clear-wrapper{  display: none;}

and keep ng-select as it is

Demo

<ng-select [items]="cities"               bindLabel="name"               placeholder="Select city"               [(ngModel)]="selectedCity"               [clearable]="true"               [clearOnBackspace] = "true"               [excludeGroupsFromDefaultSelection] = "true">

infact you do not need [clearOnBackspace] = "true"