I’m getting this error after pressing decimal after using =
eg : - 12.2 + 3 = 15.5 works but as I press decimal the error is displayed
_this.state.displayTitle.includes is not a function
this.state.displayTitle is going to be of type Number, not String.
Numbers do not have the includes method on them. You can cast/convert the type to a string first !String(this.state.displayTitle).includes(".").
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