# JavaScript: Generate a random hexadecimal color code

## JavaScript fundamental (ES6 Syntax): Exercise-11 with Solution

Write a JavaScript program to generate a random hexadecimal color code.

• Use Math.random() to generate a random 24-bit (6 * 4bits) hexadecimal number.
• Use bit shifting and then convert it to an hexadecimal string using Number.prototype.toString(16).

Sample Solution:

JavaScript Code:

``````//#Source https://bit.ly/2neWfJ2
const random_hex_color_code = () => {
let n = (Math.random() * 0xfffff * 1000000).toString(16);
return '#' + n.slice(0, 6);
};

console.log(random_hex_color_code())
```
```

Sample Output:

```#2375d4
```

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-1-11 by w3resource (@w3resource) on CodePen.

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## JavaScript: Tips of the Day

Returns an array of n-tuples of consecutive elements

Example:

```const tips_arr = (n, arr) =>  n > arr.length ? [] : arr.slice(n - 1).map((v, i) =>[...arr.slice(i, i + n - 1), v]);
console.log(tips_arr(2, [1, 2, 3, 4, 5]));
console.log(tips_arr(3, [1, 2, 3, 4, 5]));
console.log(tips_arr(5, [1, 2, 3, 4]));
```

Output:

```[[1, 2], [2, 3], [3, 4], [4, 5]]
[[1, 2, 3], [2, 3, 4], [3, 4, 5]]
[]
```