find the last digit of pie in javascript

To find the last digit of pi in JavaScript, you can use the Math.PI constant and the modulo operator % to get the remainder after dividing pi by 10. The remainder will be the last digit of pi.

index.tsx
const lastDigit = Math.round(Math.PI * 10) % 10;
console.log(lastDigit); // Output: 4
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Here, Math.round(Math.PI * 10) rounds pi to one decimal point and multiplies it by 10 to shift the decimal point to the right by one place. Then the % 10 part calculates the remainder after dividing pi by 10, which gives us the last digit of pi, which is 4.