Subtraction assignment (-=)
The subtraction assignment operator (-=) subtracts the value of the right
operand from a variable and assigns the result to the variable.
Syntax
x -= y // x = x - y
Examples
Using subtraction assignment
// Assuming the following variable
// bar = 5
bar -= 2 // 3
bar -= 'foo' // NaN
Specifications
| Specification |
|---|
| ECMAScript Language Specification # sec-assignment-operators |
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