按位与赋值(&=)

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语法

Operator: x &= y
Meaning:  x  = x & y

例子

按位与赋值运算

let a = 5;
// 5:     00000000000000000000000000000101
// 2:     00000000000000000000000000000010
a &= 2; // 0

规范

浏览器兼容性

参见

• Assignment operators in the JS guide
• Bitwise AND operator