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]] []
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