The exponentiation operator was introduced in ECMAScript 2016, ** is used to denote this operator. It accepts base on its left-hand side and exponent on its right-hand side, respectively.
Syntax
var1 ** var2
Prior to exponentiation operator(**) we used to use the Math.pow(var1, var2) function to return the base to the exponent power, both exponentiation operator and math.pow methods produces same results.
Math.pow(2, 2); // 4 // same as: 2 * 2 Math.pow(2, 3); // 8 // same as: 2 * 2 *
Examples
// x ** y let squared = 2 ** 2; // 4 // same as: 2 * 2 let cubed = 2 ** 3; // 8 // same as: 2 * 2 * 2 let num = 3; num **= 2; // 3 // same as: 3 * 3 let x = 3; x **= 4; // 81 // same as: 3 * 3 * 3 * 3 let x = 2**3**2; // 512 // same as: 2**(3**2) or 2*2*2*2*2*2*2*2*2
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