Unsigned Right Shift Operator (>>>)

Right shifts the bits of an expression, without maintaining sign.

语法

result = expression1 >>> expression2

参数

result

Any variable.

expression1

Any expression.

expression2

Any expression.

备注

The >>> operator shifts the bits of expression1 right by the number of bits specified in expression2. Zeroes are filled in from the left. Digits shifted off the right are discarded. For example:

var temp 
temp = -14 >>> 2

The variable temp has an initial value -14 (11111111 11111111 11111111 11110010 in two's complement binary). When it is shifted right two bits, the value equals 1073741820 (00111111 11111111 11111111 11111100 in binary).

必备条件

在以下文档模式中受支持：怪异模式、Internet Explorer 6标准模式、Internet Explorer 7标准模式、Internet Explorer 8标准模式、Internet Explorer 9标准模式、Internet Explorer 10标准模式、Internet Explorer 11标准模式。应用商店应用（Windows 8和Windows Phone 8.1）中也受支持。请参阅版本信息。