 # JavaScript: Check whether all the digits in a given number are the same or not

## JavaScript Basic: Exercise-140 with Solution

Write a JavaScript program to check whether all the digits in a given number are the same or not.

Pictorial Presentation: Sample Solution:

HTML Code:

``````<!DOCTYPE html>
<html>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>Check whether all the digits in a given number are the same or not</title>
<body>

</body>
</html>
```
```

JavaScript Code:

``````function test_same_digit(num) {
var first = num % 10;
while (num) {
if (num % 10 !== first) return false;
num = Math.floor(num / 10);
}
return true
}

console.log(test_same_digit(1234));
console.log(test_same_digit(1111));
console.log(test_same_digit(22222222));
``````

Sample Output:

```false
true
true
```

Flowchart: ES6 Version:

``````function test_same_digit(num) {
const first = num % 10;
while (num) {
if (num % 10 !== first) return false;
num = Math.floor(num / 10);
}
return true
}

console.log(test_same_digit(1234));
console.log(test_same_digit(1111));
console.log(test_same_digit(22222222));
``````

Live Demo:

See the Pen javascript-basic-exercise-140 by w3resource (@w3resource) on CodePen.

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﻿

## JavaScript: Tips of the Day

Returns the sum of the powers of all the numbers from start to end (both inclusive)

Example:

```const sumPower = (end, power = 2, start = 1) =>
Array(end + 1 - start)
.fill(0)
.map((x, i) => (i + start) ** power)
.reduce((a, b) => a + b, 0);
console.log(sumPower(10)); // 385
console.log(sumPower(10, 3)); // 3025
console.log(sumPower(10, 3, 5)); // 2925
```

Output:

```385
3025
2925
```