This is what I have and it's not working.
document.getElementById('form1').addEventListener('submit', function(){
document.getElementById('donate').style.display = 'none';
document.getElementById('topMessage').style.display = 'none';
});
The javascript console shows this error:
Uncaught TypeError: Cannot set property 'onclick' of undefined
Any suggestion is much appreciated.
Okay, I figured it out. All I need the preventDefault(); So, here's the solution.
document.getElementById('form1').addEventListener('submit', function(evt){
evt.preventDefault();
document.getElementById('donate').style.display = 'none';
document.getElementById('topMessage').style.display = 'none';
})