parseNumber()

Convert the calling String to a Number.

Signature

parseNumber(): Number | Null

Description

The parseNumber() method converts the calling String to a numeric Number.

  • Leading and trailing whitespace are allowed.

  • Exponential notation is allowed.

  • Comma separators aren’t allowed.

This method attempts to parse the calling String in the following order:

  1. Int

  2. Long

  3. Double

The calling string isn’t changed.

Parameters

None

Return value

One of:

Type Description

Number

Value parsed from the calling String.

Null

Unable to parse calling String.

Infinity

A String indicating a value greater than a Number can hold. A calling String value of Infinity also returns Infinity.

Examples

  1. Convert an exponential value:

    "1.7976931348623158e308".parseNumber()
     1.7976931348623157e+308

  2. Convert the String to a number larger than Number can hold:

    "1.7976931348623159e308".parseNumber()
    "Infinity"

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