JavaScript: Detect whether the website is being opened in a mobile device or a desktop/laptop
JavaScript fundamental (ES6 Syntax): Exercise-72 with Solution
Write a JavaScript program to detect whether the website is opened on a mobile device or a desktop/laptop.
- Use a regular expression to test the navigator.userAgent property to figure out if the device is a mobile device or a desktop.
Sample Solution:
JavaScript Code:
//#Source https://bit.ly/2neWfJ2
const detectDeviceType = () =>
/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)
? 'Mobile'
: 'Desktop';
console.log(detectDeviceType()); // "Mobile" or "Desktop"
Sample Output:
Desktop
Flowchart:

Live Demo:
See the Pen javascript-basic-exercise-72-1 by w3resource (@w3resource) on CodePen.
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JavaScript: Tips of the Day
Parse an HTTP Cookie header string and return an object of all cookie name-value pairs
Example:
const parseCookie = str => str .split(';') .map(v => v.split('=')) .reduce((acc, v) => { acc[decodeURIComponent(v[0].trim())] = decodeURIComponent(v[1].trim()); return acc; }, {}); console.log(parseCookie('foo=bar; equation=E%3Dmc%5E2')); // { foo: 'bar', equation: 'E=mc^2' }
Output:
[object Object] { equation: "E=mc^2", foo: "bar" }
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