JavaScript – Global decodeURI() Method
The JavaScript decodeURI() method decodes (i.e., removes %20 and replaces it with a space) a URI.
JavaScript – Global decodeURIComponent() Method
The JavaScript decodeURIComponent() method decodes (i.e., removes %20 and replaces it with a space) a URI component.
JavaScript – Global encodeURIComponent() Method
The JavaScript encodeURIComponent() method encodes a URI component.
JavaScript – Global infinity Property
A number reaches infinity when it exceeds the upper or lower limit for a number, which is positive or negative infinity (±1.797693134862315E+308).
JavaScript – Global isFinite() Method
The JavaScript isFinite() method returns “true” if a value is a finite number (not Infinity, -Infinity, or NaN).
JavaScript – Global isNaN() Method
The JavaScript isNaN() method returns true if a value is NaN (not a number).
JavaScript – Global Number() Method
The JavaScript Number() method converts a value to a number. If the value cannot be converted, NaN (not a number) is returned.
JavaScript – Global parseFloat() Method
The JavaScript parseFloat() method parses a value as a string and returns the first number.
JavaScript – Global parseInt() Method
The JavaScript parseInt() method parses a value as a string and returns the first integer.
JavaScript – Global undefined Property
The undefined property indicates that a variable has not been assigned a value, or not declared at all.