JavaScript: Format a number up to specified decimal places
JavaScript Math: Exercise-5 with Solution
Write a JavaScript function to format a number up to specified decimal places.
Test Data :
console.log(decimals(2.100212, 2));
console.log(decimals(2.100212, 3));
console.log(decimals(2100, 2));
"2.10"
"2.100"
"2100.00"
Pictorial Presentation:
Sample Solution:-
HTML Code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JS Bin</title>
</head>
<body>
</body>
</html>
JavaScript Code:
function decimals(n, d) {
if ((typeof n !== 'number') || (typeof d !== 'number'))
return false;
n = parseFloat(n) || 0;
return n.toFixed(d);
}
console.log(decimals(2.100212, 2));
console.log(decimals(2.100212, 3));
console.log(decimals(2100, 2));
Sample Output:
2.10 2.100 2100.00
Flowchart:

Live Demo:
See the Pen javascript-math-exercise-5 by w3resource (@w3resource) on CodePen.
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Next: Write a JavaScript function to find the highest value in an array.
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