round a number to the nearest hundredth in typescript

To round a number to the nearest hundredth in typescript, you can use the Math.round() method along with multiplying the number by 100, rounding it, and then dividing it by 100 again.

Here's an example code snippet:

index.ts
const num = 3.14159;
const roundedNum = Math.round(num * 100) / 100;

console.log(roundedNum); // Output: 3.14
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In this example, the num variable holds the number that needs to be rounded to the nearest hundredth. The roundedNum variable holds the result of this operation, which is the num variable multiplied by 100, rounded to the nearest whole number, and then divided by 100. This results in the number being rounded to the nearest hundredth.

Note that this method may not always produce the desired result due to rounding errors with floating point numbers. For critical applications that require exact decimal calculations, you may need to use a specialized decimal library or implement your own rounding algorithm that accounts for floating point precision limitations.