I want to disable my submit button if all three validation rules below fails otherwise disable false. Any help
<script>
const form = document.getElementById('signup-form');
let name = document.getElementById('name');
let email = document.getElementById('email');
let password = document.getElementById('password');
let button = document.getElementById("signup-button");
form.addEventListener('keyup', (e) => {
e.preventDefault();
checkValidation();
});
function checkValidation() {
let nameValue = name.value.trim();
let emailValue = email.value.trim();
let passwordValue = password.value.trim();
let emailValidate = /^\w @[a-zA-Z_] ?\.[a-zA-Z]{2,3}$/;
if (nameValue == "" || nameValue == null) {
document.getElementById('name-error').style.display = 'block';
document.getElementById('name-error').innerText = "Name Cannot be blank";
} else {
document.getElementById('name-error').style.display = 'none';
}
if (emailValue == "" || emailValue == null) {
document.getElementById('email-error').style.display = 'block';
document.getElementById('email-error').innerText = "Email Cannot be blank";
} else if (!emailValidate.test(emailValue)) {
document.getElementById('email-error').style.display = 'block';
document.getElementById('email-error').innerText = "Please Enter a Valid email";
} else {
document.getElementById('email-error').style.display = 'none';
}
if (passwordValue == "" || passwordValue == null) {
document.getElementById('password-error').style.display = 'block';
document.getElementById('password-error').innerText = "Password Cannot be blank";
} else {
document.getElementById('password-error').style.display = 'none';
}
}
</script>
Now I want to disable my submit button? How can it be achieved
CodePudding user response:
In that function, initialize a variable, lets say isValid
to true
.
In the checks, if any check fails, set isValid
to false
.
And at the bottom of the function, add a condition to enable or disable the Submit button. I'm providing a sample code for your reference.
if (isValid === true) {
// Enable the submit button
}
else {
// Enable the submit button
}
CodePudding user response:
You can add a flag like this:
<script>
const form = document.getElementById('signup-form');
let name = document.getElementById('name');
let email = document.getElementById('email');
let password = document.getElementById('password');
let button = document.getElementById("signup-button");
let error = false;
form.addEventListener('keyup', (e) => {
e.preventDefault();
checkValidation();
});
if(error){
button.setAttribute('disabled', '')
}else{
button.removeAttribute('disabled')
}
function checkValidation() {
let nameValue = name.value.trim();
let emailValue = email.value.trim();
let passwordValue = password.value.trim();
let emailValidate = /^\w @[a-zA-Z_] ?\.[a-zA-Z]{2,3}$/;
if (nameValue == "" || nameValue == null) {
document.getElementById('name-error').style.display = 'block';
document.getElementById('name-error').innerText = "Name Cannot be blank";
error = true;
} else {
document.getElementById('name-error').style.display = 'none';
}
if (emailValue == "" || emailValue == null) {
document.getElementById('email-error').style.display = 'block';
document.getElementById('email-error').innerText = "Email Cannot be blank";
error = true;
} else if (!emailValidate.test(emailValue)) {
document.getElementById('email-error').style.display = 'block';
document.getElementById('email-error').innerText = "Please Enter a Valid email";
} else {
document.getElementById('email-error').style.display = 'none';
}
if (passwordValue == "" || passwordValue == null) {
document.getElementById('password-error').style.display = 'block';
document.getElementById('password-error').innerText = "Password Cannot be blank";
error = true;
} else {
document.getElementById('password-error').style.display = 'none';
}
}
</script>