Number.ToPrecision Method

Explanation	Returns the value stored in the Number object as a string in exponential or fixed-point notation for the specified number of digits. If the argument is omitted, the result equivalent to the ToString method is returned.
Call format	var text = num.ToPrecision( [ fractionDigits ] )
Return value	String in exponential or fixed-point notation. Returns the one with the shorter expression.
Arguments	integer fractionDigits	Number of digits. Specify 1 to 15.
Exception	Func-4	The argument value is invalid
Example of use	`var num = new Number; num.Value = 5678.12345; print(num.ToPrecision(3), "￥n"); print(num.ToPrecision(6), "￥n"); ---Output result--- 5.68e+003 5678.12`
Related item	ToExponential, ToFixed, ToString method