I'd be happy to help you with that! ??The `onShareAppMessage` function in WeChat Mini Program is used to customize the sharing behavior of your app. In this case, you want to implement a feature where when users share your app, they can choose from a list of random images to share along with the link.
Here's an example implementation:
```javascriptonShareAppMessage: function(options) {
var shareimg = [
' ' ' // add more images here...
];
return {
title: '分享标题', // customize the sharing title path: '/page/path', // customize the sharing link imageUrl: shareimg[Math.floor(Math.random() * shareimg.length)], // random image URL success: function(res) {
console.log('share success');
},
fail: function(err) {
console.log('share failed');
}
};
}
```
Let me explain what's going on:
1. We define an array `shareimg` containing the URLs of the images you want to share.
2. In the `onShareAppMessage` function, we use the `Math.random()` function to generate a random index within the length of the `shareimg` array.
3. We then use this random index to select an image URL from the array using `shareimg[Math.floor(Math.random() * shareimg.length)]`.
4. The selected image URL is assigned to the `imageUrl` property, which will be used as the sharing image when users share your app.
When a user shares your app, WeChat Mini Program will display a list of images for them to choose from. When they select an image, it will be shared along with the link and title you customized in the `onShareAppMessage` function.
Some additional tips:
* Make sure to replace the ` URLs with your actual image hosting URLs.
* You can add more images to the `shareimg` array as needed.
* If you want to customize the sharing behavior further, you can modify the `title`, `path`, and other properties in the `onShareAppMessage` function.
* Don't forget to handle the `success` and `fail` callbacks to log any errors or successes when sharing.
I hope this helps! Let me know if you have any questions or need further assistance. ??
