ConcretePage.comAngular Material Input Disabled
April 21, 2024
<input matInput>. We can disable input text in following ways.
1. Use
disabled attribute with <input> element.
2. Pass
disabled:true to FormControl constructor.
3. Use
enable() and disable() methods of FormControl.
disabled Attribute
To disable an input text, use disabled attribute. To dynamically enable and disable input text, create a component property with default true/false value. Use property binding to bind component property with disabled attribute.
TS code:
nameDisabled = true;
<input matInput [disabled]="nameDisabled" [(ngModel)]="name">
With FormControl
FormControl accepts FormControlState object. It has value and disabled property. Use it as below.
TS code:
city = new FormControl({ value: "", disabled: true });
<input matInput [formControl]="city">
Using enable() and disable() of FormControl
To enable and disable input text, we can use enable() and disable() methods of FormControl.
TS code:
userForm = this.formBuilder.group({
age: [{ value: "", disabled: true }]
});
get age() {
return this.userForm.get('age');
}
ageEnable() {
this.age?.enable();
}
ageDisable() {
this.age?.disable();
}
<input matInput formControlName="age"> <button (click)="ageEnable()">Enable</button> <button (click)="ageDisable()">Disable</button>
Complete Example to Disable Input Text
user.component.ts
import { Component } from '@angular/core';
import { MatInputModule } from '@angular/material/input';
import { MatFormFieldModule } from '@angular/material/form-field';
import { FormBuilder, FormControl, FormsModule, ReactiveFormsModule, Validators } from '@angular/forms';
import { CommonModule } from '@angular/common';
@Component({
selector: 'app-user',
standalone: true,
imports: [MatFormFieldModule, MatInputModule, FormsModule, ReactiveFormsModule, CommonModule],
templateUrl: './user.component.html'
})
export class UserComponent {
name = "";
nameDisabled = true;
nameEnable() {
this.nameDisabled = false;
}
nameDisable() {
this.nameDisabled = true;
}
city = new FormControl({ value: "", disabled: true }, [Validators.maxLength(20)]);
cityEnable() {
this.city?.enable();
}
cityDisable() {
this.city?.disable();
}
constructor(private formBuilder: FormBuilder) { }
userForm = this.formBuilder.group({
age: [{ value: "", disabled: true }, [Validators.max(60)]]
});
get age() {
return this.userForm.get('age');
}
ageEnable() {
this.age?.enable();
}
ageDisable() {
this.age?.disable();
}
onFormSubmit() {
}
}
<h3>1. With 'disabled' Attribute</h3>
<mat-form-field>
<mat-label>Name: </mat-label>
<input matInput [disabled]="nameDisabled" [(ngModel)]="name">
</mat-form-field>
<button (click)="nameEnable()">Enable</button>
<button (click)="nameDisable()">Disable</button>
<h3>2. With FormControl</h3>
<mat-form-field>
<mat-label>City: </mat-label>
<input matInput [formControl]="city">
</mat-form-field>
<button (click)="cityEnable()">Enable</button>
<button (click)="cityDisable()">Disable</button>
<h3>3. With FormGroup</h3>
<form [formGroup]="userForm" (ngSubmit)="onFormSubmit()">
<mat-form-field>
<mat-label>Age: </mat-label>
<input matInput formControlName="age">
</mat-form-field>
<button (click)="ageEnable()">Enable</button>
<button (click)="ageDisable()">Disable</button>
</form>
