Copyright (c)2023 Promineo Tech
Promineo Tech Academic Team

	var x = "value";
	let y = "value";
	const z = "value"; (constant, can not be changed)

	var arr = [element1, element2, element3];

	arr[index];

	arr[index] = newElement;

		• arr.push(element)
		• arr.pop()
		• arr.shift()
		• arr.unshift(element)
		• arr.slice(start, end)
		• arr.splice(index, deleteCount, element)

	if (condition) { 
		statements; 
	} else {
		statements;
	}

	switch (expression) { 
		case x: statements; 
		        break; 
		case y: statements; 
		        break; 
		default: statements; 
	}

	for (var i = 0; i < 10; i++) { 
		statements; 
	}

	while (condition) {
		statements;
	}

	do {
		statements;	
	} while (condition);

	function name(param1, param2) { statements; }

	name(arg1, arg2);

	(param1, param2) => { statements; }

	var obj = { key1: value1, key2: value2 };

	obj.key1 or obj["key1"]

	obj.key1 = newValue;

	button.addEventListener("click", function() { alert("Button clicked!"); });

	document.getElementById("id"), document.querySelector("css selector")

	element.innerHTML = "new content";

	element.style.property = "new value";

	str.length

	str1 + str2

	str.indexOf("substring")

	str.slice(start, end)

	str.replace("old", "new")