Js Method for judging different execution events on mobile phones and PCs _ javascript skills

Source: Internet
Author: User
This article mainly introduces how to determine the different event execution methods of mobile phones and PCs by js, so that you can determine whether the mobile phone or pc end can select the corresponding event execution function, it is a very practical technique. If you need it, you can refer to the examples in this article to describe how js judges different event execution methods on mobile phones and PCs. Share it with you for your reference. The details are as follows:

Determine whether it is a mobile phone:

function isMobile(){ var sUserAgent= navigator.userAgent.toLowerCase(), bIsIpad= sUserAgent.match(/ipad/i) == "ipad", bIsIphoneOs= sUserAgent.match(/iphone os/i) == "iphone os", bIsMidp= sUserAgent.match(/midp/i) == "midp", bIsUc7= sUserAgent.match(/rv:1.2.3.4/i) == "rv:1.2.3.4", bIsUc= sUserAgent.match(/ucweb/i) == "ucweb", bIsAndroid= sUserAgent.match(/android/i) == "android", bIsCE= sUserAgent.match(/windows ce/i) == "windows ce", bIsWM= sUserAgent.match(/windows mobile/i) == "windows mobile", bIsWebview = sUserAgent.match(/webview/i) == "webview"; return (bIsIpad || bIsIphoneOs || bIsMidp || bIsUc7 || bIsUc || bIsAndroid || bIsCE || bIsWM);}

Determine the event to use:

var touchStart,touchMove,touchEnd;touchStart = isMobile() ? 'touchstart' : 'mousedown';touchMove = isMobile() ? 'touchmove' : 'mousemove';touchEnd = isMobile() ? 'touchend' : 'mouseup';

Corresponding Handling of three types of events:

Touchstart: function (e) {var e = e | window. event; // determine which event to use stopDefault (e); // different browsers prevent different if (isMobile ()) {// for mobile phone var touch = e. touches [0]; this. y1 = touch. pageY} else {this. y1 = e. pageY; // if it is not a mobile phone} this. y2 = 0 ;}, touchmove: function (e) {var e = e | window. event; stopDefault (e); if (isMobile () {var touch = e. touches [0]; this. y2 = touch. pageY;} else {this. y2 = e. pageY ;}, touchend: function (e) {var e = e | window. event; stopDefault (e); if (this. y2 = 0) {return;} var diffY = this. y2-this.y1; if (diffY> 50) {this. doNext ();} else if (diffY <-50) {this. doPrev ();} this. y1 = 0, this. y2 = 0 ;},

Default method to prevent browser events:

function stopDefault(e){  var e=e || window.event; if(e.preventDefault){ e.preventDefault(); }else{ e.returnValue=false; }}

I hope this article will help you design javascript programs.

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.