JavaScript identifies the mobile phone and jumps to the mobile website and returns to the computer version

In today's mobile Internet era, more and more users like to browse the web through their mobile phones. Therefore, it has become an inevitable trend to provide websites adapted to different devices. In this context, how to allow users to easily switch between the computer version and the mobile version has become the key.

Among them, it is a common method to identify the device used by the user through Javascript code and automatically jump to the corresponding adapted version of the website. Next, this article will introduce the implementation process of this method.

1. Detect device type

Knowing which device the user is using is the prerequisite for judging whether to jump to the mobile version. To do this, you need to obtain the user's device information through the navigator.userAgent property in Javascript.

The sample code is as follows:

// 判断是否为移动设备
function isMobile() {
   return /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent);
}

Through this function, you can detect whether the user is using a mobile device. If the test result is true, it means that the user is using a mobile device and needs to jump to the mobile version of the website.

2. Jump to the mobile version of the website

If the detection results show that the user is using a mobile device, the user needs to be redirected to the mobile version of the website.

The specific method is as follows:

if (isMobile()) {
   window.location.href = "http://m.example.com";
}

In this code, the method to determine whether the user is a mobile device calls the above-mentioned isMobile() function. If the conditions are met, the user will be redirected to the mobile version. website. The redirectUrl here needs to be replaced with the actual mobile version website URL.

3. Return to the computer version of the website

For the convenience of users, a link needs to be provided in the mobile version of the website so that users can "return to the computer version of the website". When implementing this function, it is also necessary to detect the user's device type through Javascript code. If the user is using a PC device, then the user needs to be redirected to the desktop version of the website.

The sample code is as follows:

// 判断是否为 PC 设备
function isPC() {
   return !/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent);
}

// 点击“回到电脑版网站”时，跳转到电脑版网站
$("#returnToPC").click(function(){
   if (isPC()) {
       window.location.href = "http://www.example.com";
   }
});

In this code, the "Return to PC version of the website" link is bound to a click event. When the user clicks on this link, it is detected that the user is using After the PC device is installed, the user is redirected to the corresponding PC version of the website.

Summary

As mentioned above, identifying the user device type in Javascript and jumping to the corresponding adapted version of the website, as well as providing the function of returning to the computer version of the website, is a cross-platform implementation for many websites. Browse the basics. In actual use, it needs to be optimized and expanded according to different business needs to better meet the needs of users.

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