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WMLScript
Quick Reference: Functions in the Lang Standard Library
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abort(message)
Ends
the execution of WMLScript, and returns message and control
to the WML browser. It is used for abnormal exit.
Example:
Lang.abort("Error
code 110");
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abs(numeric_value)
Calculates
the absolute value of numeric_value.
Example:
var
x = Lang.abs(-10.44);
var y = Lang.abs(-10);
x
has the floating-point value 10.44.
y
has the integral value 10.
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characterSet()
Returns
a MIBEnum value from IANA that represents the character set
supported by the WMLScript interpreter. The MIBEnum value of
character sets can be found at
http://www.iana.org/assignments/character-sets.
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exit(value)
Ends
the execution of WMLScript, and returns value and control
to the WML browser. It is used for normal exit.
Example:
Lang.exit(0);
Lang.exit("OK");
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float()
Returns
a Boolean value that tells whether floating-point numbers are
supported.
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isFloat(string)
Returns
a Boolean value that tells whether the conversion of string
into a floating-point number is possible.
Example:
var
toFloatOK1 = Lang.isFloat("23.21");
var toFloatOK2 =
Lang.isFloat("WMLScript Reference");
toFloatOK1
has the Boolean value true.
toFloatOK2
has the Boolean value false.
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isInt(string)
Returns
a Boolean value that tells whether conversion of string
into an integer is possible.
Example:
var
toIntegerOK1 = Lang.isInt("22");
var toIntegerOK2 =
Lang.isInt("WMLScript Reference");
toIntegerOK1
has the Boolean value true.
toIntegerOK2
has the Boolean value false.
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max(numeric_value1,
numeric_value2)
Returns
numeric_value2 if numeric_value2 is greater than
numeric_value1. Otherwise returns numeric_value1.
Example:
var
larger_number1 = Lang.max(10.5, 100);
var larger_number2 =
Lang.max(10.5, 5.23);
Example:
larger_number1
has the integral value 100.
larger_number2
has the floating-point value 10.5.
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maxInt()
Returns
the largest integer that can be represented, which should be
2147483647.
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min(numeric_value1,
numeric_value2)
Returns
numeric_value2 if numeric_value2 is smaller than
numeric_value1. Otherwise returns numeric_value1.
Example:
var
smaller_number1 = Lang.min(10, 100.5);
var smaller_number2 =
Lang.min(10.5, 5.23);
Example:
smaller_number1
has the integral value 10.
smaller_number2
has the floating-point value 5.23.
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minInt()
Returns
the smallest integer that can be represented, which should be
-2147483648.
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parseFloat(string)
Converts
string to a floating-point number.
Example:
var
float_number1 = Lang.parseFloat("1.22");
var
float_number2 = Lang.parseFloat("WMLScript Reference");
float_number1
has the floating-point value 1.22.
float_number2
has the value invalid.
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parseInt(string)
Converts
string to an integer.
Example:
var
integer1 = Lang.parseInt("2334");
var integer2 =
Lang.parseInt("WMLScript Reference");
integer1
has the integral value 2334.
integer2
has the value invalid.
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random(numeric_value)
Returns
a random integer in the range 0 to numeric_value.
Example:
var
random_number = Lang.random(2);
random_number
has an integral value 0, 1 or 2.
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seed(numeric_value)
If
numeric_value < 0, the
value used to initialize the random number generator will be
determined by the mobile device randomly, otherwise numeric_value
is used to initialize the random number generator.
Example:
Lang.seed(-1);
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