FFC caculator: Can't solve user story #11

codepen: https://codepen.io/ggrass1585/pen/VwmwbOL

In your click handler you are just adding on whatever is pressed. You need some logic in there to reject a decimal point if there is one in the current number.

I don’t know what is the logic?

Something like this:

if (already a decimal point in the input) {
  don't allow user to enter a second decimal point

Yes, what jsdisco said. And that “don’t allow” logic can be somethings as simple as a return statement (returning nothing) to keep the rest of the click handler from firing.

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