Barashada Javascript dad baddan waxa ay u arka mid aad u adag balse aqrinta blogg-kaan kadib waxaad arkay dhamaan inta ugu muhiim aad u rabto inaad barato javascript.

Javascript waa programming Language loo isticmaalo in lagu sameeyo websites oo waxa ay ka dhigaysaa web applications mid dynamic ah, Qoraalkaan waxaad ku arki doontaa mowduucyadda ugu muhiim ee Javascript.

Ka hor inta aadan ku dhaqan gelin JavaScript code, waa inaad fahantaa fundamentals of JavaScript, kuwaas oo ah waxa luuqadda ay ka koobnaan doonto inteeda badan.

• Variables and Data Types: Baro waxa loo yaqaan data types sida strings, numbers, booleans, objects, arrays, iyo null/undefined. Fahan sida loo isticmaalo loona keydiyo waxna loogu bedalo data.

let name = "Ahmed"; // String
let age = 25; // Number
let isStudent = true; // Boolean
let person = { name: "Ahmed", age: 25 }; // Object
let numbers = [1, 2, 3]; // Array
let unknown = null; // Null

• Control Structures: Baro sida JavaScript code-ka loo go’aaniyo xilliyo gaar ah sida (if-else statements) iyo looping (for, while loops).

let age = 18;
if (age >= 18) {
  console.log("Waad qaadan kartaa baasaboor.");
} else {
  console.log("Ma qaadan kartid baasaboor.");
}

// Loop example
for (let i = 0; i < 5; i++) {
  console.log(i);
}

• Functions: Fahan waa maxay functions, sida loo sameeyo iyo doorkooda marka code-ka laga dhigayo mid dib loo isticmaali karo.

function greet(name) {
  return `Hello, ${name}!`;
}

console.log(greet("Ahmed")); // Output: Hello, Ahmed!

• Events: Baro sida loo maareeyo events marka la joogo JavaScript, sida clicks, form submissions, iyo wixii la mid ah.

document.getElementById("myButton").addEventListener("click", function() {
  alert("Button clicked!");
});

JavaScript waxaa loo isticmaalaa web development, marka waxaa muhiim ah inaad si fiican u fahanto sida uu ula falgalo JavaScript.

• Document Object Model (DOM): Baro waxa uu yahay DOM iyo sida uu structure webpage uu wax ugu badelo.

document.getElementById("demo").innerHTML = "Hello, World!";

• Events and Listeners: Baro sida JavaScript uu ugu falceliyo ficilada isticmaalayaasha sida ee webpage-ka (sida clicks, keyboard input, iwm).

document.getElementById("myInput").addEventListener("keyup", function(event) {
  console.log("Key pressed: " + event.key);
});

• APIs: Si fiican u fahan browser APIs loogu isticmaal badan yahay (sida Fetch API, ama the LocalStorage API).

// Fetch API Example
fetch("https://api.example.com/data")
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error("Error:", error));

// LocalStorage Example
localStorage.setItem("username", "Ahmed");
let user = localStorage.getItem("username");
console.log(user); // Output: Ahmed

JavaScript wuxuu leeyahay awood uu ku maareeyo asynchronous code, taas oo ah fikrad muhiim ah.

• Callbacks: Fahan sida callbacks ay u shaqeeyaan iyo sida loo isticmaalo.

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

greet("Ahmed", function() {
  console.log("Goodbye!");
});

• Promises: Baro sida promises ay u sameeyaan asynchronous iyo waxa ay ugu duwan yihiin callbacks.

let myPromise = new Promise(function(resolve, reject) {
  let success = true;
  if (success) {
    resolve("Operation successful!");
  } else {
    reject("Error occurred.");
  }
});

myPromise.then(function(result) {
  console.log(result);
}).catch(function(error) {
  console.log(error);
});

• Async/Await: Baro habka loo sameeyo asynchronous code iyadoo la isticmaalayo async/await, taas oo ka dhigaysa mid u eg synchronous code iyadoo wali ah mid non-blocking ah.

async function fetchData() {
  let response = await fetch("https://api.example.com/data");
  let data = await response.json();
  console.log(data);
}

fetchData();

Markaad baratay intii ugu muhiimsaneyd:

• Scope:

let globalVar = "I am global";

function testScope() {
  let localVar = "I am local";
  console.log(globalVar); // Accessible
  console.log(localVar); // Accessible
}

console.log(globalVar); // Accessible
console.log(localVar); // Not Accessible

• Closures:

function outer() {
  let outerVar = "I am from outer";

  return function inner() {
    console.log(outerVar); // Accesses outer function's variable
  };
}

let closureFunc = outer();
closureFunc();

• Prototypes and Inheritance:

function Person(name, age) {
  this.name = name;
  this.age = age;
}

Person.prototype.greet = function() {
  console.log("Hello, my name is " + this.name);
};

let person1 = new Person("Ahmed", 25);
person1.greet(); // Output: Hello, my name is Ahmed