how to write and test javascript code example
Example: write test code javascript
// create directory
// npm init -y
// npm install tape
// create a file example: filename.js
// create a function in it and export as module.exports = functionName
// create a test file example: filename.test.js
// import the exported function as const functionName = require(./name)
test('textContent' t =>{
const actual = //something;
const expected = // something;
t.equal = (actual, expected);
t.end();
});