Validate formula

[hieunv1]

How i can't validate input '=#@@#@#@' is false, '=A1+A2+A3-B1' true , I use React Imark , please help

[josdejong]

@hieunv1 do you mean you want to check whether the syntax of an expression is valid? You can just parse the expression with math.parse and see whether that throws an error.