In JavaScript, you can cut decimals to a specified number of decimal places using the `toFixed`

method of the `Number`

object. Here’s an example that cuts a number `num`

to a specified number of decimal places `places`

:

```
const cutDecimals = (num, places) => {
return Number(num.toFixed(places));
};
const num = 3.1415926535;
const cutNum = cutDecimals(num, 2);
console.log(cutNum);
// Output: 3.14
```

In this example, the `cutDecimals`

function takes a number `num`

and a number of decimal places `places`

as arguments. The function then converts `num`

to a string with a specified number of decimal places using the `toFixed`

method, and then returns the result as a number using the `Number`

constructor. The `toFixed`

method rounds the number to the specified number of decimal places and adds zeros to the end if necessary to achieve the desired number of decimal places.

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