JavaScript: Check whether a given number is in a given range

Last update on May 30 2022 10:00:45 (UTC/GMT +8 hours)

JavaScript Basic: Exercise-118 with Solution

Write a JavaScript program to check whether a given number is in a given range.

Pictorial Presentation:

JavaScript: Check whether a given number is in a given range.

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title> Check if a given number is in a given range</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function is_inrange(x, y, z) 
{
    return y >= x && y <= z;
}

console.log(is_inrange(1,2,3));
console.log(is_inrange(1,2,-3));
console.log(is_inrange(1.1,1.2,1.3));

Sample Output:

true
false
true

Flowchart:

ES6 Version:

function is_inrange(x, y, z) 
{
    return y >= x && y <= z;
}

console.log(is_inrange(1,2,3));
console.log(is_inrange(1,2,-3));
console.log(is_inrange(1.1,1.2,1.3));

Live Demo:

See the Pen javascript-basic-exercise-118 by w3resource (@w3resource) on CodePen.

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Next: Write a JavaScript program to check whether a given integer has an increasing digits sequence.

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JavaScript: Tips of the Day

How to insert an item into an array at a specific index (JavaScript)?

What you want is the splice function on the native array object.

arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:

var arr = [];
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";

console.log(arr.join());
arr.splice(2, 0, "Lene");
console.log(arr.join());

Ref: https://bit.ly/2BXbp04