JavaScript: Check if two given numbers are approximately equal to each other
JavaScript fundamental (ES6 Syntax): Exercise-256 with Solution
Write a JavaScript program to check if two given numbers are approximately equal to each other.
- Use Math.abs() to compare the absolute difference of the two values to epsilon.
- Omit the third argument, epsilon, to use a default value of 0.001.
Sample Solution:
JavaScript Code:
//#Source https://bit.ly/2neWfJ2
const approximatelyEqual = (v1, v2, epsilon = 0.001) => Math.abs(v1 - v2) < epsilon;
console.log(approximatelyEqual(Math.PI / 2.0, 1.5708));
Sample Output:
133 100
Flowchart:

Live Demo:
See the Pen javascript-basic-exercise-256-1 by w3resource (@w3resource) on CodePen.
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Previous: Write a JavaScript program that will return true if the provided predicate function returns true for at least one element in a collection, false otherwise.
Next: Write a JavaScript program to convert a 2D array to a comma-separated values (CSV) string.
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JavaScript: Tips of the Day
How to check whether a string contains a substring in JavaScript?
ECMAScript 6 introduced String.prototype.includes:
const string = "foo"; const substring = "oo"; console.log(string.includes(substring));
includes doesn't have Internet Explorer support, though. In ECMAScript 5 or older environments, use String.prototype.indexOf, which returns -1 when a substring cannot be found:
var string = "foo"; var substring = "oo"; console.log(string.indexOf(substring) !== -1);
Ref: https://bit.ly/3fFFgZv
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