The Left Shift Assignment Operator is represented by “<<=”. This operator moves the specified number of bits to the left and assigns that result to the variable. We can fill the vacated place by 0. The left shift operator treats the integer stored in the variable to the operator’s left as a 32-bit binary number. This can also be explained as the number is shifted to the left by the integer which is the right of the operator and assign the result to the variable.
Syntax
a <<= b Or a = a << b
Where –
- a is the first operand, and
- b is the second operand.
Example 1: In this example, we will see the implementation of the left shift assignment.
Javascript
let x = 7; // 00000000000000000000000000000111 x <<= 2; // 00000000000000000000000000011100 console.log(x); |
28
Example 2: In this example, we will see left shift operator is not used for the negative number.
Javascript
let x = 1; // 00000000000000000000000000000001 x <<= -1; // -10000000000000000000000000000000 console.log(x); |
-2147483648
Example 3: In this example, we will see the implementation of the left shift assignment operator.
Javascript
let a = 10; // 00000000000000000000000000001010 let b = 5 // 00000000000000000000000000000101 a = a << b; // 00000000000000000000000101000000 console.log(a); |
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We have a complete list of Javascript Assignment Operators, Please check this article Javascript Assignment Operator.
Supported Browser:
- Chrome 1
- Edge 12
- Firefox 1
- Opera 3
- Safari 1
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