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JavaScript Global


JavaScript global properties and methods can be used to create JavaScript objects.


JavaScript Global Properties

Property Description
Infinity Represents a positive infinity value.
NaN Indicates whether a value is a number.
undefined Indicates an undefined value.

JavaScript Global Functions

Function Description
decodeURI() Decodes a encoded URI.
decodeURIComponent() Decodes a encoded URI component.
encodeURI() Encodes a string as a URI.
encodeURIComponent() Encodes a string as a URI component.
escape() Encodes a string.
eval() Evaluates JavaScript strings and executes them as script code.
isFinite() Checks whether a value is a finite number.
isNaN() Checks whether a value is a number.
Number() Converts the value of an object to a number.
parseFloat() Parses a string and returns a floating point number.
parseInt() Parses a string and returns an integer.
String() Converts the value of an object to a string.
unescape() Decodes a string encoded by escape().
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