


I received a request last week. The request is as follows: when the user scans the QR code, a link will be generated. The link will send a request to the backend and return an apk download address. The user can click the download button to download the apk. Then a problem occurred. After testing, it was found that the apk could not be downloaded by clicking the download button on the page opened by scanning WeChat. After Baidu found out, it turned out that the built-in browser of WeChat blocked the download link. After communicating with the demander, the demand was changed to if If the user opens the page using WeChat's built-in browser, the user is prompted to change the browser to open the page, otherwise the apk cannot be downloaded. So how to determine whether the user is using WeChat browser?
We know that js can obtain browser-related information through window.navigator.userAgent, such as: Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.154 Safari/ 537.36, then we can also use this method to obtain relevant information about WeChat’s built-in browser: Mozilla/5.0 (iPhone; CPU iPhone OS 7_1_1 like Mac OS X) AppleWebKit/537.51.2 (KHTML, like Gecko) Mobile/11d201 MicroMessenger/ 5.3. Use the keyword MicroMessenger to determine whether it is WeChat’s built-in browser. The judgment function is as follows:
function isWeiXin(){
var ua = window.navigator.userAgent.toLowerCase();
if(ua.match(/MicroMessenger/i) == 'micromessenger'){
return true;
}else{
return false;
}
}
demo:
You can view it if you open it with WeChat browser to the following text
Note: You can put the above demo on the server, and then generate a QR code to scan.

Detailed explanation of JavaScript string replacement method and FAQ This article will explore two ways to replace string characters in JavaScript: internal JavaScript code and internal HTML for web pages. Replace string inside JavaScript code The most direct way is to use the replace() method: str = str.replace("find","replace"); This method replaces only the first match. To replace all matches, use a regular expression and add the global flag g: str = str.replace(/fi

Leverage jQuery for Effortless Web Page Layouts: 8 Essential Plugins jQuery simplifies web page layout significantly. This article highlights eight powerful jQuery plugins that streamline the process, particularly useful for manual website creation

So here you are, ready to learn all about this thing called AJAX. But, what exactly is it? The term AJAX refers to a loose grouping of technologies that are used to create dynamic, interactive web content. The term AJAX, originally coined by Jesse J

Article discusses creating, publishing, and maintaining JavaScript libraries, focusing on planning, development, testing, documentation, and promotion strategies.

10 fun jQuery game plugins to make your website more attractive and enhance user stickiness! While Flash is still the best software for developing casual web games, jQuery can also create surprising effects, and while not comparable to pure action Flash games, in some cases you can also have unexpected fun in your browser. jQuery tic toe game The "Hello world" of game programming now has a jQuery version. Source code jQuery Crazy Word Composition Game This is a fill-in-the-blank game, and it can produce some weird results due to not knowing the context of the word. Source code jQuery mine sweeping game

This tutorial demonstrates creating dynamic page boxes loaded via AJAX, enabling instant refresh without full page reloads. It leverages jQuery and JavaScript. Think of it as a custom Facebook-style content box loader. Key Concepts: AJAX and jQuery

This JavaScript library leverages the window.name property to manage session data without relying on cookies. It offers a robust solution for storing and retrieving session variables across browsers. The library provides three core methods: Session

This tutorial demonstrates how to create a captivating parallax background effect using jQuery. We'll build a header banner with layered images that create a stunning visual depth. The updated plugin works with jQuery 1.6.4 and later. Download the


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

SublimeText3 Linux new version
SublimeText3 Linux latest version

SublimeText3 English version
Recommended: Win version, supports code prompts!
