JavaScript: Round a number to a specified number of digits and strip extra zeros
JavaScript Math: Exercise-24 with Solution
Write a JavaScript function to round a number to a specified number of digits and strip extra zeros (if any).
Test Data :
var a = -4.55555;
console.log(result);
-4.5556
var a = 5.0001000;
console.log(result);
5.0001
Sample Solution:-
HTML Code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JavaScript function to round a number to a specified number of digitsand strip extra zeros (if any).</title>
</head>
<body>
</body>
</html>
JavaScript Code:
//var a = -1.1230000;
//var a = 0.0000009999999;
//var a = 1.000000000;
//var a = -4.55555;
//var a = 5.0001000;
var a = 1.1234000;
var result = parseFloat(a.toFixed(4));
console.log(result);
Sample Output:
1.1234
Pictorial Presentation:
Live Demo:
See the Pen javascript-math-exercise-24 by w3resource (@w3resource) on CodePen.
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Next: Write a JavaScript function to make currency math (add, subtract, multiply, division etc.).
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