The Subtraction Assignment Operator( -=) is used to subtract a value from a variable. This operator subtracts the value of the right operand from a variable and assigns the result to the variable, in other words, allows us to decrease the left variable from the right value.
Syntax:
a -= b
We will now see some examples of the javascript Subtraction Assignment (-=).
Example 1: In this example, we will use the Subtraction Assignment Operator on numerical values.
Javascript
let number = 9; number -= 5; console.log(number); |
Output:
4
Example 2: In this example, we will be subtracting a string with a number using the subtraction assignment operator.
Javascript
let number = 10; let string = "num"; console.log(number -= string); |
Output:
NaN
Supported browser:
- Google Chrome
- Mozilla Firefox
- Safari
- Internet Explorer
We have a complete list of Javascript Assignment operators, to check those please go through the Javascript Assignment Operators.
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