For icon font-icon

// form login
onLogin(email:HTMLInputElement,pass:HTMLInputElement,check:HTMLInputElement){
let user = email.value;
let password = pass.value;
this.dbLocalStorage();
if(user==localStorage.getItem(user)&&password==localStorage.getItem(password)){
alert("user");
}else{
alert('Error')

}
}
// localStorage
dbLocalStorage(){
let key="MyAdmin"
let value="123"
localStorage.setItem(key,"MyAdmin");
localStorage.setItem(value,"123")
}

Create login in localstorage