Exponentiation assignment (**=)
The exponentiation assignment operator (**=) raises the value of a variable to the power of the right operand.
语法
Operator: x **= y Meaning: x = x ** y
Examples
Using exponentiation assignment
// Assuming the following variable
// bar = 5
bar **= 2 // 25
bar **= 'foo' // NaNSpecifications
| Specification |
|---|
| ECMAScript (ECMA-262) Assignment operators |
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