In the past, JavaScript files were only able to import external libraries through the use of a script tag. However, with the emergence of ES6 (ECMAScript 2015), a new method of importing exports has been introduced. This new method is known as ES modules and can be imported using the
import statement. In this article, we will be discussing why it is necessary to use the
import statement in order to load ES modules.
What are ES Modules?
ES modules are a type of JavaScript module that allows for the organization of code into individual files. These files can then be imported and used in other files through the use of the
import statement. ES modules provide a more efficient way of managing code, as they allow for the creation of smaller, more focused modules that can be used across different applications.
Why Use the Import Statement?
The
import statement is necessary in order to load ES modules because it allows the JavaScript interpreter to correctly handle the exported modules. Without the
import statement, the interpreter would be unable to locate and execute the export statements in the module file. In addition, the
import statement is also necessary to handle conflicts in naming between modules. By using the
import statement, developers can ensure that they are importing the correct module and avoid any naming conflicts that may arise.
How to Use the Import Statement
Using the
import statement is relatively simple. To import a module, simply use the following syntax:
import moduleName from 'path/to/module';
Alternatively, if the module exports multiple values, the syntax can be modified to import specific values from the module:
import { exportedValue1, exportedValue2 } from 'path/to/module';
Once imported, the module can be used just like any other variable or function within the importing file.
Conclusion
In conclusion, the use of the
import statement is essential when working with ES modules. It allows for the correct handling of exported modules and helps to avoid naming conflicts between modules. By utilizing ES modules and the
import statement, developers can create more efficient and organized code that is easier to manage and maintain.
