Lesson: 10 | Assignment Operators

Notes

The = assignment operator assigns a value to a variable.

var x = 2;

document.write(x);

Output: 2

The += assignment operator adds a value to a variable.

var x = 2;

x += 2

document.write(x);

Output: 4

The -= assignment operator subtracts a value from a variable.

var x = 5;

x -= 2

document.write(x);

Output: 3

The *= assignment operator multiplies a variable.

var x = 4;

x *= 3;

document.write(x);

Output: 12

The /= assignment divides a variable.

var x = 15;

x /= 3;

document.write(x);

Output: 5

The %= assignment operator assigns a remainder to a variable.

var x = 11;

x %= 4;

document.write(x);

Output: 3

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