function init() {
// initialisation stuff here
}
// elsewhere in code
init();
Here is what the above code is Doing:
1. We create a function called init.
2. We call the function.
The function is called init. It doesn’t take any arguments. It doesn’t return anything. It just prints a message.
The function is called by writing its name followed by parentheses.
// This usually happends because you’re trying to split something that isn’t // a string, just put .toString() before // example: Here is what the above code is Doing: 1. We’re creating a variable called “myString” and assigning it the value of “Hello World” 2. We’re creating a variable called “myArray” and assigning it the…
Here is what the above code is Doing: 1. We’re importing the TextInput component from react-native. 2. We’re creating a new component called MyApp. 3. We’re returning a component in the render function. 4. We’re passing a prop called secureTextEntry to the component. The secureTextEntry prop is a boolean prop that hides the text a…
import React from ‘react’; const App = () => { const greeting = ‘Hello Function Component!’; return ;}; const Headline = ({ value }) => {value}; export default App; Here is what the above code is Doing: 1. We create a function component called App. 2. We create a variable called greeting and assign it…
function NameList() { const names = [‘Bruce’, ‘Clark’, ‘Diana’] return ( {names.map(name => {name})} ) } Here is what the above code is Doing: 1. We’re creating a list of names. 2. We’re using the map() method to iterate over each name in the list. 3. We’re returning a element for each name. 4. We’re…
//HTML //Javascript var canvas = document.getElementById(“canv”); canvas.width = canvas.height = 100; var ctx = canvas.getContext(“2d”); ctx.fillStyle = “red”; ctx.fillRect(10, 10, 80, 80); Here is what the above code is Doing: 1. We get the canvas element by its id. 2. We set the width and height of the canvas to 100 pixels. 3. We get…
npm init next-app nextjs-blog –example “https://github.com/vercel/next-learn-starter/tree/master/learn-starter” Here is what the above code is Doing: 1. npm init next-app is a command that creates a new Next.js app. 2. nextjs-blog is the name of the directory that will be created for your app. 3. –example “https://github.com/vercel/next-learn-starter/tree/master/learn-starter” is the URL of the example app that you want…