Js: how to get the WeChat version number. js gets the version number.

How to get the js version number. js gets the version number.

It is widely used now, but the version has been updated. Different versions have different functions. Therefore, it is very important to understand the version number so that you can update and experience new functions in a timely manner. So how can I get the version number using js?

I. Determine the version number

Var wechatInfo = navigator. userAgent. match (/MicroMessenger \/([\ d \.] +)/I); if (! WechatInfo) {alert ("this activity only supports");} else if (wechatInfo [1] <"5.0 ") {alert ("this activity only supports version 5.0 and later ");}

The value of wechatInfo [1] is the version number.

Ii. Determine whether to enable js in a browser

Function is_weixn () {var ua = navigator. userAgent. toLowerCase (); if (ua. match (/MicroMessenger/I) = "micromessenger") {return true;} else {return false ;}}

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