Add event listener javascript

- Add event listener javascript click
- Add event listener javascript keypress
- Add event listener javascript onchange
- Add event listener javascript input
- Add event listener javascript for button
- Add event listener javascript checkbox
- Add event listener javascript load
- Add custom event listener javascript
- Add onclick event listener javascript
- Add remove event listener javascript
- Add keyboard event listener javascript
- Add hover event listener javascript
- Add event listener dynamically javascript
- Add key event listener javascript
- Add global event listener javascript