Web Reference: Jul 31, 2025 · This code defines a self-invoking function that returns a facto function, which calculates the factorial of a number while using caching for efficiency. The cache object stores previously calculated results to avoid redundant computations. The code above first defines two variables, factorialNumber and factorial. factorial is initialized with 1. factorialNumber will get the result of the prompt (a number is expected) and then, using a cycle, in each step, factorial is multiplied with the index of the step, which is represented by i. In this example, you will learn to write a JavaScript program to calculate the factorial of a number.
YouTube Excerpt: #javascript program to print all #factorial from 1 to n. Ex- 3! =3*2*1=6 #bck #computer #html #html5
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