event handler code example
Example 1: most used events in javascript
most used events in javascript
Example 2: error handler
function handlerError(request, response){
response.status(500).send('opps');
}
.catch(handlerError);
Example 3: events in javascript
$('#id').on('click',function(){
yourFunction(args);
});
Example 4: js eventlistener to add and remove stylings
const form = document.querySelector('form');
const fname = document.getElementById('fname');
const lname = document.getElementById('lname');
const para = document.querySelector('p');
form.onsubmit = function(e) {
if (fname.value === '' || lname.value === '') {
e.preventDefault();
para.textContent = 'You need to fill in both names!';
}
}