JavaScript: Get the native type of a value
JavaScript fundamental (ES6 Syntax): Exercise-220 with Solution
Write a JavaScript program to get the native type of a value. Returns the lowercased constructor name of value, "undefined" or "null" if value is undefined or null.
- Return 'undefined' or 'null' if the value is undefined or null.
- Otherwise, use Object.prototype.constructor.name to get the name of the constructor.
Sample Solution:
JavaScript Code:
//#Source https://bit.ly/2neWfJ2
const getType = v =>
v === undefined ? 'undefined' : v === null ? 'null' : v.constructor.name.toLowerCase();
console.log(getType(new Set([1, 2, 3])));
Sample Output:
set
Flowchart:

Live Demo:
See the Pen javascript-basic-exercise-220-1 by w3resource (@w3resource) on CodePen.
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JavaScript: Tips of the Day
Randomizes the order of the values of an array, returning a new array
Example:
const tips_shuffle = ([...arr]) => { let x = arr.length; while (x) { const i = Math.floor(Math.random() * x--); [arr[x], arr[i]] = [arr[i], arr[x]]; } return arr; }; const foo = [2, 4, 6]; console.log(tips_shuffle(foo));
Output:
[4, 2, 6]
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