The left shift assignment operator (<<=
) moves the specified amount of bits to the left and assigns the result to the variable.
Left shift assignment (<<=)
Try it
Syntax
x <<= y // x = x << y
Examples
Using left shift assignment
let a = 5; // 00000000000000000000000000000101 a <<= 2; // 20 // 00000000000000000000000000010100
Specifications
Browser compatibility
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
Left_shift_assignment |
1
|
12
|
1
|
3
|
3
|
1
|
1
|
18
|
4
|
10.1
|
1
|
1.0
|
1.0
|
0.10.0
|
See also
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Left_shift_assignment