JavaScript: Detect whether the website is being opened in a mobile device or a desktop/laptop

JavaScript fundamental (ES6 Syntax): Exercise-72 with Solution

Detect Mobile or Desktop

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
// Define a function 'detectDeviceType' to determine whether the user's device is mobile or desktop.
const detectDeviceType = () =>
  // Use a regular expression to test the userAgent string for common mobile device identifiers.
  /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)
    ? 'Mobile' // If any of the identifiers are found, return 'Mobile'.
    : 'Desktop'; // Otherwise, return 'Desktop'.

// Example usage:
console.log(detectDeviceType()); // Outputs "Mobile" if the device is mobile, otherwise "Desktop".

Output:

Desktop

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-72-1 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript program that detects whether the current user agent corresponds to a mobile device or a desktop.
• Write a JavaScript function that uses window.navigator.userAgent to classify the device type.
• Write a JavaScript program that returns a boolean indicating if the website is being viewed on a mobile platform.

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