Validate input before submission. Use required, pattern, na custom JS validation. Example Code: Submit document.getElementById("myForm").addEventL...
addEventListener inatofautiana na inline onclick. Inarahisisha kuongeza events nyingi kwa element moja. Example Code: Click Me document.getElementById("btn").ad...
Event listeners hufanya interaction na user. Example Code: document.getElementById('nameInput').addEventListener('input', function(){ document.getElementById...
DOM inaruhusu kubadilisha HTML elements dynamically. Example Code: Hello World Change Text function changeText() { document.getElementById("demo").innerText = ...
Objects huchukua key-value pairs. Properties zinapatikana kwa dot notation au bracket notation. Example Code: let student = { name: "Faulink", age: 25, cour...
Arrays huchukua list of values. Methods: push, pop, shift, unshift, map, filter, forEach Example Code: let fruits = ["Apple", "Banana", "Mango"]; fruits.push("Orang...
Functions hufanya code reusable. Parameters zinatuma data ndani ya function. Example Code: function greetUser(name){ console.log("Hello, " + name + "!"); } gr...
Loops hufanya code irudiane kwa urahisi. Example Code: // for loop for(let i=1; i...
if na else zinakagua conditions. switch inatumika kwa multiple cases. Example Code: let grade = "A"; if (grade === "A") { console.log("Excellent"); } else if ...
Notes: Arithmetic: +, -, *, /, % Comparison: ==, ===, !=, >, < Logical: &&, ||, ! Example Code: let a = 10; let b = 5; console.log("Sum:", a + b); console.log("...