Jinsi ya Kutumia JavaScript Forms Validation
Validate input before submission.
Use required, pattern, na custom JS validation.
Example Code:
<form id="myForm">
<input type="text" id="username" placeholder="Username" required>
<input type="email" id="email" placeholder="Email" required>
<button type="submit">Submit</button>
</form>
<p id="error"></p>
<script>
document.getElementById("myForm").addEventListener("submit", function(e){
let username = document.getElementById("username").value;
let email = document.getElementById("email").value;
if(username.length < 3) {
e.preventDefault();
document.getElementById("error").innerText = "Username must be at least 3 characters!";
}
});
</script>
YouTube Description:
Jifunze jinsi ya ku-validate form inputs kwa JavaScript kabla ya submission.
Hashtags:
#JSForms #FormValidation #Faulink
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