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WMLScript Reference WMLScript Reference

WMLScript > Lang > parseFloat()

parseFloat() - The parseFloat Function

Usage:

parseFloat(value)

Description: Returns an floating-poing value defined by the string value. The legal integer syntax is specified by the WMLScript numeric string grammar for decimal floating-point literals with the following additional parsing rule:

Parsing ends when the first character is encountered that cannot be parsed as being part of the floating-poing representation.

The result is the parsed string converted to an floating-point value.

Example:

var a = Lang.parseFloat("123.7");                  // a = 123.7
var b = Lang.parseFloat("    +7.34e2 Hz");         // b = 7.34e2
var c = Lang.parseFloat("  70e-2 F");              // c = 70.0e-2
var d = Lang.parseFloat("-.1 C");                  // d = -0.1
var e = Lang.parseFloat(" 100 ");                  // e = 100.0
var e = Lang.parseFloat("Number: 5.5");            // f = invalid
var e = Lang.parseFloat("7.3e meters");            // g = invalid
var e = Lang.parseFloat("7.3e- m/s");              // h = invalid

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