How does uniapp jump to an external link and pass parameters

With the continuous development of the mobile Internet, everyone needs to install various applications on their mobile phones, and often need to jump from one application to another application or website to obtain more information or complete some operations. When developing apps, it is often necessary to jump users to external links to obtain more information or complete certain tasks. This requires passing some parameters to let the external links know which application the user comes from and what operations the user needs to do. This article will introduce how to use uniapp to jump to external links and pass parameters.

1. uniapp jumps to external links

In uniapp, you can use uni.navigateToMiniProgram, uni.openUrl, uni.navigateTo, uni.redirectTo and other methods to jump to external links. Among them, uni.navigateToMiniProgram and uni.navigateTo are methods to jump to another applet or open another uni-app page, while uni.openUrl and uni.redirectTo can jump to external links.

When using the uni.openUrl method to jump to an external link, you can use the following code:

uni.openUrl({
  url: 'https://www.baidu.com'
});

This way you can open the Baidu website in uniapp. However, if you need to pass certain parameters to Baidu website so that Baidu website knows which application the user comes from and completes the corresponding operation, you need to use the following method.

2. uniapp jumps to the external link to pass parameters

In uniapp, you can add parameters to the url to pass parameters. When using the uni.openUrl method, you can add parameters to the url, for example:

uni.openUrl({
  url: 'https://www.baidu.com?key1=value1&key2=value2'
});

Pass key1=value1 and key2=value2 to the Baidu website through the url, so that the Baidu website knows which application the user comes from and Complete the appropriate operations. If you need to dynamically add parameters to the url, you can use the following method:

let url = 'https://www.baidu.com';
let params = {
  key1: 'value1',
  key2: 'value2'
};
let paramsStr = '';
for (let key in params) {
  paramsStr += key + '=' + params[key] + '&';
}
paramsStr = paramsStr.substr(0, paramsStr.length - 1);
url = url + '?' + paramsStr;
uni.openUrl({
  url: url
});

This code adds key1=value1 and key2=value2 to a params object, and converts the parameters into key1= through a loop value1&key2=value2, and splice the url and parameters together, and finally jump to the https://www.baidu.com?key1=value1&key2=value2 link to pass the parameters.

When jumping to an external link, you can also use the uni.encodeURIComponent method to encode the parameters to avoid the problem that special characters cause the URL to not be parsed correctly.

3. Summary

This article introduces the method of using uniapp to jump to external links and pass parameters. In actual development, you need to choose different jump methods according to different scenarios, and pay attention to encoding parameters to ensure that the URL can be parsed correctly. I hope this article can help you jump to external links to pass parameters in uniapp development.

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