How does uniapp obtain the parameters of the entry page?

With the popularity of mobile applications and the continuous deepening of mobile application architecture, developers need to constantly learn new technologies and applications, and discover problems and solutions in practice. With the rapid development of mobile application development technology, developers have to deal with various new technologies and frameworks, including using Uniapp to develop cross-platform applications. In this article, we will explore how to obtain the parameters of the Uniapp entry page.

Uniapp is a cross-platform application framework developed based on the Vue.js framework, which can run on multiple platforms, including iOS, Android, H5, and WeChat applets. Uniapps share the exact same code base, providing a fast development and easy maintenance approach. When developing Uniapp applications, it is usually necessary to obtain the parameters of the entry page in order to display the corresponding page or perform related operations.

There are two ways to obtain Uniapp entry page parameters: one is to obtain parameters through the created life cycle function of App.vue provided by uni-app; the other is to obtain the parameters through the URL query parameters provided by uni-app Get parameters. This article will introduce the specific implementation of these two methods one by one.

Method 1: Obtain parameters through the created life cycle function of App.vue

In this method, we need to use the created life cycle function of the App.vue component to obtain the route of the current application Path and corresponding parameters. The specific steps are as follows:

1. Define the created life cycle function in the App.vue component, and obtain the path and parameters of the current route from this.$route object.

export default {
    created() {
        let route = this.$route.path
        let params = this.$route.query
        console.log('route:', route)
        console.log('params:', params)
    }
}

In the above code, we get the path of the current route from this.$route.path, and get the parameters of the current route from this.$route.query.

2. When jumping to a specific page, the parameter object needs to be passed as a query parameter to the routing object of the target page. For example:

uni.navigateTo({
    url: '/pages/myPage/myPage?param1=value1&param2=value2'
})

In the above code, we pass the parameter object as the query parameter to the routing object of the target page through the navigateTo method.

Method 2: Obtain parameters through URL query parameters

In this method, we need to use the URL query parameters provided by uni-app to obtain the parameters of the current route. The specific steps are as follows:

1. Get the parameter object of the current route. For example:

const urlParams = new URLSearchParams(window.location.search)
let param1 = urlParams.get('param1')
let param2 = urlParams.get('param2')
console.log('param1:', param1)
console.log('param2:', param2)

In the above code, we use the URLSearchParams object to obtain the query parameters of the current route, and obtain the corresponding parameter values ​​through the get() method.

2. When jumping to a specific page, the parameter object needs to be passed as a query parameter to the routing object of the target page. For example:

uni.navigateTo({
    url: '/pages/myPage/myPage?param1=value1&param2=value2'
})

In the above code, we pass the parameter object as the query parameter to the routing object of the target page through the navigateTo method.

In summary, to obtain the parameters of the Uniapp entry page, you can obtain the parameters through the created life cycle function of App.vue or obtain the parameters through the URL query parameters. No matter which method is used, the parameter object needs to be passed to the routing object as a query parameter when jumping to a specific page. In this way, we can easily obtain the entry page parameters in the Uniapp application and process them accordingly according to actual needs.

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