This function converts the input to a number. A string that consists of optional white space, followed by an optional minus sign, followed by a number, followed by white space is converted to the IEEE 754 number that is nearest (according to the IEEE 754 round-to-nearest rule) to the mathematical value represented by the string. Any other string is converted to a NaN. A boolean true is converted to 1. A boolean false is converted to 0. A node-set is first converted to a string as if by a call to the string function and then converted in the same way as a string parameter.

Signature:

number(input as string or boolean or node-set)

Arguments

• input as string or boolean or node-set: Value to convert.

For example:

number('12.3') returns 12.3.