Javascript page i hope you understand this
<i><html><head>
<title>
my first page
</title>
</head>
<body>
<h1>pakistan</h1>
<p>i love pakistan</p>
<div class="contaner">
<button id="click">click Button</button>
</div>
<script>// 1. ways to print in javascript
//console.log("hello world")
// alert("me")
//document.write("My first document")
// 2. java scrpt console API
//console.log("hello world", 4 + 6, "Another log")
//console.warn("this is warning")
//console.error("this is an error")
/*
multi
line
Comment
*/
// 3. javascript variale
var number1 = 50;
var number2 = 20;
console.log(number1 + number2);
// 4. data type
// Numbers
var number1 = 15;
var number2 = 5.2;
console.log("number1-number2")
// String
var str1 = "this is string";
var str2 = 'THIS is also string';
console.log("str1, str2")
//Object
var marks = {
sami: 50,
bilal: 30,
hamza: 20,
}
console.log("marks")
// Boolians
var a = true;
var b = false;
console.log("a, b");
//var und = undefined;
var und;
console.log(und)
var n = null
console.log("n")</script>
</body>
</html></i>
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