=ISERROR(expression)
=ISERROR(A1)
The ISERROR function is used to check if a value or expression returns an error. For example this will return TRUE if A1 contains an error.
=IFERROR(A1, "Error")
The ISERROR function can also be used to return a value if an error is found in an expression. For instance, this will return Error if A1 contains an error.
=ISERROR(VALUE("abc"))
Another way to use the ISERROR function is to check if a certain value is an error. For example, this will return TRUE because the value abc is not a valid number.
=ISERROR(SUM(A1:A10))
The ISERROR function can also be used to check if a formula returns an error. For example this will return TRUE if the sub formula returns an error.
The ISERROR function is a useful information function that returns TRUE if the value is an error. It is a quick and efficient way to identify and handle errors in data.