Number.parseInvariant Function
Returns a numeric value from a string representation of a number. This function is static and can be called without creating an instance of the object.
var numberVar = Number.parseInvariant(value);
Arguments
Term |
Definition |
|---|---|
value |
A string that represents a whole or floating-point number. |
Returns
A floating-point representation of value, if value represents a number; otherwise, NaN (not a number).
Remarks
Use the parseInvariant function to create a numeric value from a string representation of a number. The value argument can contain a decimal point and the "+" and "-" characters to indicate positive and negative, respectively.
The parseInvariant function provides consistent parsing across all types and should be used instead of the similar ECMAScript (JavaScript) parseInt method.
Example
The following example shows how to use the parseInvariant function to create a numeric value from a string representation of a number.
var a = Number.parseInvariant("4");
var b = new Number(2);
var c = Number.parseInvariant("1.53") + a + b;
// View the results: "7.53"
alert(c);