validation before submit form javascript code example

Example: submit form after validation javascript

<script>
	const submitButton = document.getElementById('submitButton');
	const formData; // Your form data
	submitButton.addEventListener('click', () => {
    	if(validateForm(formData)) {
        	submitForm();
        } else {
          	// Show errors
      		return;
      	}
    });

	function validateForm(formData) {
    	let goodForm = true;
      	// Your Logic
      	if(formData.firstName == '') {
        	goodForm = false;
        }
      
      return goodForm;
    }

	function submitForm() {
   		// Process/submit your form
    }

</script>