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Usama

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🚀 JavaScript Basic Syntax Examples

#javascript #programming #webdev #beginners

JavaScript is one of the most popular programming languages in the world.
Here are some basic syntax examples that every beginner should know.

1. Variable Declarations 

let name = "Usama"; let age = 22; let isStudent = true; let job = null; let hobbies = ["reading", "gaming", "coding"]; let address = { street: "123 Main St", city: "Anytown", country: "Pakistan", };
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2. Function Declaration 

function greet() { console.log(`Hello, my name is ${name} and I am ${age} years old.`); }
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3. Conditional Statement 

if (isStudent) { console.log("I am a student."); } else { console.log("I am not a student."); }
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4. Loop Example 

for (let i = 0; i < hobbies.length; i++) { console.log(`Hobby ${i + 1}: ${hobbies[i]}`); }
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5. Object Method 

function displayAddress() { console.log( `I live at ${address.street}, ${address.city}, ${address.country}.` ); }
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6. Arrow Function 

const add = (a, b) => a + b;
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7. Template Literals 

const message = `My name is ${name} and I am ${age} years old. I enjoy ${hobbies.join(", ")}.`; console.log(message);
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8. Destructuring Assignment 

const { street, city, country } = address; console.log(`Address: ${street}, ${city}, ${country}`);
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9. Spread Operator 

const newHobbies = [...hobbies, "traveling", "photography"]; console.log("Updated hobbies:", newHobbies);
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10. Rest Parameter 

function sum(...numbers) { return numbers.reduce((acc, num) => acc + num, 0); } console.log("Sum of numbers:", sum(1, 2, 3, 4, 5));
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11. Default Parameters 

function multiply(a, b = 1) { return a * b; } console.log("Multiplication result:", multiply(5)); // b defaults to 1
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12. For...of Loop 

for (const hobby of hobbies) { console.log(`Hobby: ${hobby}`); }
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13. For...in Loop 

for (const key in address) { console.log(`${key}: ${address[key]}`); }
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✅ Summary

In this example, we covered:

  • Variables (let, const)
  • Functions & Arrow Functions
  • Conditionals (if/else)
  • Loops (for, for...of, for...in)
  • Objects & Methods
  • Template Literals, Spread, Rest, Default Parameters

This is a beginner-friendly overview of JavaScript’s basic syntax. 🚀

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