目录

JavaScript 全局参考

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JavaScript 全局属性和方法可与所有 JavaScript 对象一起使用。

JavaScript 全局方法和属性

Name	Description
decodeURI()	Decodes a URI
decodeURI Component()	Decodes a URI component
encodeURI()	Encodes a URI
encodeURI Component()	Encodes a URI component
escape()	Deprecated. Use instead: encodeURI() encodeURIComponent()
eval()	Evaluates a string and executes it as if it was script code
Infinity	A numeric value that represents positive/negative infinity
isFinite()	Determines whether a value is a finite, legal number
isNaN()	Determines whether a value is an illegal number
NaN	"Not-a-Number" value
Number()	Converts an object's value to a number
parseFloat()	Parses a string and returns a floating point number
parseInt()	Parses a string and returns an integer
String()	Converts an object's value to a string
undefined	Indicates that a variable has not been assigned a value
unescape()	Deprecated. Use instead: decodeURI() decodeURIComponent()

笔记

由于这些方法是全局的，而全局的对象是浏览器窗口，因此这些方法实际上是窗口方法：

isNaN() 与 window.isNaN() 相同。

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