How to overwrite props?

Question

JavaScript

How to overwrite props?
for example we have props which is default this.props.val = 5, we also have 2 props for example this.props.val2 = null.
in jsx there is a comparison, for example, if el === val , if it is identical, then true (everything is OK), but when this.pros val2 is overwritten, then compare it with el?

Answer 1

el === (val2 || val)