How to change the onclick property of an html element with JavaScript?

Question

I am making a calculator and I want to change the onClick function, when we click any other element.

Answer 1

Get the element reference, for example:

var eref = document.getElementById('myElementID');

... and use its .addEventListener() method:

e.ref.addEventListener('click', function() { /* code */ });

Obviously, you can provide a function name already declared ;)

Answer 2

thanks man