Disable button

routerLink="/" វាគឺជាផ្លូវសម្រាប់បង្ហាញនៅលើ URL នៅពេលចុចវានឹងទៅដល់
routerLink="/" routerLinkActive="active" វាគឺជាកន្លែងសម្រាប់ប្រើប្រាស់ style css ដើម្បីបង្ហាញ style
i.e .active{
background-color:red;
}
routerLink="/" routerLinkActive="active" [routerLinkActiveOptions]="{exact:true}" វាគឺចំនុចដែលធ្វើអោយ routerLink ធ្វើការ​ true នឹង​
មិនដំណើរការពេល false.(lower case and upper case)

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