JavaScript Code Templates

Hello World

Displays "Hello World" in the console.

console.log("Hello World");

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Variables

Declare variables and print them.

let x = 10;
let y = 5;
console.log(x + y);

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If Statement

Simple if-else example in JavaScript.

let age = 18;
if(age >= 18){
  console.log("Adult");
}else{
  console.log("Minor");
}

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For Loop

Loop through numbers 1 to 5.

for(let i = 1; i <= 5; i++){
  console.log(i);
}

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While Loop

Execute while a condition is true.

let count = 0;
while(count < 5){
  console.log(count);
  count++;
}

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Function

Define and call a function.

function greet(name){
  console.log("Hello " + name);
}
greet("Alice");

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Array

Create an array and loop through it.

let fruits = ["apple","banana","cherry"];
fruits.forEach(fruit => console.log(fruit));

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Object

Create a simple object and access properties.

let person = {name:"Alice", age:25};
console.log(person.name);

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Random Number

Generate a random number between 1 and 10.

let rand = Math.floor(Math.random()*10)+1;
console.log(rand);

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DOM Manipulation

Change content of an HTML element.

document.getElementById("demo").innerText = "Hello!";

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