此页面由社区从英文翻译而来。了解更多并加入 MDN Web Docs 社区。

Unsigned right shift assignment (>>>=)

Try it

The unsigned right shift assignment operator (>>>=) moves the specified amount of bits to the right and assigns the result to the variable.

语法

Operator: x >>>= y
Meaning:  x    = x >>> y

例子

Using unsigned right shift assignment

let a = 5; //   (00000000000000000000000000000101)
a >>>= 2;  // 1 (00000000000000000000000000000001)

let b = -5; // (-00000000000000000000000000000101)
b >>>= 2;   // 1073741822 (00111111111111111111111111111110)

规范

Specification
ECMAScript (ECMA-262)
Assignment operators

浏览器兼容性

BCD tables only load in the browser

参见