The difference between import and require in vue-Vue.js-php.cn

In Vue.js, the main difference between import and require is as follows: import is used to import ES modules, while require is used to import ES and CommonJS modules. import loads modules at runtime, while require loads modules at compile time. import supports asynchronous loading, but require does not. import loads specific exports in a module on demand, while require loads the entire module at once.

The difference between import and require in vue

The difference between import and require in Vue.js

In Vue.js, import and require are both Commands for loading modules and components, but they have the following main differences:

Semantics and Usage

import:is ES6 Keywords in are used to import modules. Its syntax isimport { } from ''.
require:is a function in Node.js that is used to load modules on the backend. Its syntax isconst = require('').

Module type

import:Only ES modules can be imported, that is, modules that follow the ES6 module specification.
require:Can import ES modules and CommonJS modules (non-ES modules).

Loading time

import:Modules are loaded at runtime, that is, when the code is executed to the import statement.
require:Modules are loaded at compile time, that is, when packaging the application.

Asynchronous support

import:Supports asynchronous loading, that is, using theimport()syntax Modules can be loaded asynchronously.
require:Asynchronous loading is not supported.

Other differences

import:Specific exports in the module can be loaded on demand, that is, usingimport { } from ''Syntax.
require:Load the entire module at once.
import:Var declarations will not be generated in the compiled code, while require will generate var declarations.

Conclusion

In general, import is mainly used to import ES modules in Vue.js front-end code, while require is used in back-end code Import various types of modules.

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