Left shift assignment (<<=)
The left shift assignment operator (<<=) moves the specified amount of bits to the left and assigns the result to the variable.
Syntax
x <<= y // x = x << y
Examples
Using left shift assignment
let a = 5; // 00000000000000000000000000000101 a <<= 2; // 20 // 00000000000000000000000000010100
Specifications
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
Left_shift_assignment |
1 |
12 |
1 |
3 |
3 |
1 |
1 |
18 |
4 |
10.1 |
1 |
1.0 |
See also
© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Left_shift_assignment