I look forward to seeing examples of this being used or altered to include the use of promises or observables. More from this Author. This site uses Akismet to reduce spam. Learn how your comment data is processed. Choosing a Global Software Development Partner to Accelerate Your Digital Strategy To be successful and outpace the competition, you need a software development partner that excels in exactly the type of digital projects you are now faced with accelerating, and in the most cost effective and optimized way possible.
Get the Guide. About the Author More from this Author. Microsoft has stated that starting with Internet Explorer 11, Microsoft vendor prefixed version of this property msMaxTouchPoints may be removed and recommends using maxTouchPoints instead.
I know it's turned off by default but that's what I connect the change in results with the "in" method used to work in Chrome. However, this seems to be working, as far as I have tested:. All browsers I've run that code on state the typeof is "object" but I feel more certain knowing that it's whatever but undefined It would be cool if someone made some more tests and shared the results.
Wrote this for one of my sites and probably is the most foolproof solution. Especially since even Modernizr can get false positives on touch detection. We also know that when user open your page he or she will: 1 move the mouse 2 click 3 touch the screen for scrolling, or A helpful blog post on the subject, linked to from within the Modernizr source for detecting touch events.
Conclusion: it's not possible to reliably detect touchscreen devices from Javascript. If you use Modernizr , it is very easy to use Modernizr. However, I prefer using a combination of Modernizr. If you don't use Modernizr, you can simply replace the Modernizr.
We will fill this in dynamically later on. Generally, such tests are done via one of the following common patterns: Summary of JavaScript feature detection techniques Feature detection type Explanation Example If member in object Check whether a certain method or property typically an entry point into using the API or other feature you are detecting for exists in its parent Object.
If it does, check what value it returns. Property on element retains value Create an element in memory using Document. Download this now by: Clicking on the Development build link. Clicking the big pink Build button on the page that comes up. Clicking the top Download link in the dialog box that appears. Let's have a look at how Modernizr works in terms of selectively applying CSS. First, make a copy of supports-feature-detect.
Save them as modernizr-css. For example: Modernizr. Let's look at an example to show how you'd use those properties. First of all, make a local copy of the modernizr-js. LatLng position. Map document. Next up, we'll start looking at automated testing. Previous Overview: Cross browser testing Next. Introduction to cross browser testing Strategies for carrying out testing Handling common HTML and CSS problems Handling common JavaScript problems Handling common accessibility problems Implementing feature detection Introduction to automated testing Setting up your own test automation environment.
Complete beginners start here! Getting started with the Web Getting started with the Web overview Installing basic software What will your website look like? A first splash into JavaScript What went wrong? To understand what the concept of feature detection is, and be able to implement suitable solutions in CSS and JavaScript.
Lauke Update: Please read blmstr's answer below before pulling a whole feature detection library into your project. It simply adds classes to the html element for each feature. For example: html. Tags: Javascript Jquery Touch. Related How to setup next.
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