60 lines
1.7 KiB
Markdown
60 lines
1.7 KiB
Markdown
|
---
|
||
|
|
id: 587d7b8c367417b2b2512b57
|
||
|
|
title: Use * to Import Everything from a File
|
||
|
|
challengeType: 1
|
||
|
|
forumTopicId: 301210
|
||
|
|
dashedName: use--to-import-everything-from-a-file
|
||
|
|
---
|
||
|
|
|
||
|
|
# --description--
|
||
|
|
|
||
|
|
Suppose you have a file and you wish to import all of its contents into the current file. This can be done with the `import * as` syntax. Here's an example where the contents of a file named `math_functions.js` are imported into a file in the same directory:
|
||
|
|
|
||
|
|
```js
|
||
|
|
import * as myMathModule from "./math_functions.js";
|
||
|
|
```
|
||
|
|
|
||
|
|
The above `import` statement will create an object called `myMathModule`. This is just a variable name, you can name it anything. The object will contain all of the exports from `math_functions.js` in it, so you can access the functions like you would any other object property. Here's how you can use the `add` and `subtract` functions that were imported:
|
||
|
|
|
||
|
|
```js
|
||
|
|
myMathModule.add(2,3);
|
||
|
|
myMathModule.subtract(5,3);
|
||
|
|
```
|
||
|
|
|
||
|
|
# --instructions--
|
||
|
|
|
||
|
|
The code in this file requires the contents of the file: `string_functions.js`, that is in the same directory as the current file. Use the `import * as` syntax to import everything from the file into an object called `stringFunctions`.
|
||
|
|
|
||
|
|
# --hints--
|
||
|
|
|
||
|
|
Your code should properly use `import * as` syntax.
|
||
|
|
|
||
|
|
```js
|
||
|
|
assert(
|
||
|
|
code.match(
|
||
|
|
/import\s*\*\s*as\s+stringFunctions\s+from\s*('|")\.\/string_functions\.js\1/g
|
||
|
|
)
|
||
|
|
);
|
||
|
|
```
|
||
|
|
|
||
|
|
# --seed--
|
||
|
|
|
||
|
|
## --seed-contents--
|
||
|
|
|
||
|
|
```js
|
||
|
|
// Only change code above this line
|
||
|
|
|
||
|
|
stringFunctions.uppercaseString("hello");
|
||
|
|
stringFunctions.lowercaseString("WORLD!");
|
||
|
|
```
|
||
|
|
|
||
|
|
# --solutions--
|
||
|
|
|
||
|
|
```js
|
||
|
|
import * as stringFunctions from "./string_functions.js";
|
||
|
|
|
||
|
|
// add code above this line
|
||
|
|
stringFunctions.uppercaseString("hello");
|
||
|
|
stringFunctions.lowercaseString("WORLD!");
|
||
|
|
```
|