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Counting numbers after decimal point in JavaScript
We are required to write a JavaScript function that takes in a number which may be an integer or a floating-point number. If it's a floating-point number, we have to return the count of numbers after the decimal point. Otherwise we should return 0.
For our example, we are considering two numbers −
const num1 = 1.123456789; const num2 = 123456789;
Example
Following is the code −
const num1 = 1.123456789; const num2 = 123456789; const decimalCount = num => { // Convert to String const numStr = String(num); // String Contains Decimal if (numStr.includes('.')) { return numStr.split('.')[1].length; }; // String Does Not Contain Decimal return 0; } console.log(decimalCount(num1)) // 9 console.log(decimalCount(num2)) // 0
Output
This will produce the following output in console −
9 0
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