The signature of WeChat jssdk is valid for 1 year. Users can have a validity period of 1 year after applying for jssdk signature on WeChat. During the validity period, the signature will be displayed and valid.
Wechat Payment JS-SDK is a Wechat-based web development toolkit provided by WeChat public platform for web developers. By using the WeChat payment JS-SDK, web developers can use the WeChat payment function efficiently and provide a better web experience for WeChat users.