How to introduce js files in uniapp

As Uniapp continues to grow and develop, more and more developers are beginning to use it to develop cross-platform applications. During the development process, sometimes you may need to introduce some js files written by yourself. This article will introduce how to introduce js files using Uniapp.

1. Introduce js files into the page

1. Find the page that needs to introduce js files in the pages directory (for example: index.vue)
2. In this page In the script tag, use the following code to introduce the js file:

import xxx from '@/xxx.js' 

Among them, the '@' symbol represents the project root directory, and xxx represents the name of the js file written by yourself. If the file is not in the root directory, you need to modify the import path.

3. Use the methods or variables in the js file in the code, for example:

xxx.doSomething();

2. Introduce the js file into the component

1. Find the component file that needs to introduce the js file (for example: my-component.vue)
2. In the script tag of the component, use the following code to introduce the js file:

import xxx from '@/xxx.js' 

Similarly , the '@' symbol represents the project root directory, and xxx represents the name of the js file written by yourself. If the file is not in the root directory, you need to modify the import path.

3. Use the methods or variables in the js file in the component code, for example:

mounted() {
  xxx.doSomething();
}

3. Introduce the js file globally

1. In the project root directory, find the vue.config.js file
2. Add the following code in the file:

configureWebpack: {
  externals: {
    'xxx': 'xxx'
  },
  resolve: {
    alias: {
      '@': path.resolve(__dirname, './src')
    }
  }
}

Among them, 'xxx': 'xxx' means required In the name of the imported js file, the first 'xxx' is the name of the file in the project, and the second 'xxx' is the name in the global world; the '@' symbol also represents the project root directory.

3. Wherever you need to use the js file, use the following code to introduce it:

window.xxx.doSomething();

IV. Summary

Through the above three methods, we can Introduce your own js files into Uniapp and use them in pages, components or globally. When writing js files, you need to pay attention to the naming and path specifications to avoid introduction failure or code confusion.

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