anisur3036/class-3.html

## class-3.html
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Class-3</title>
</head>

<body>
    <h2>This is post headline</h2>
    <p>Lorem ipsum dolor sit amet consectetur adipisicing elit. Vero debitis similique provident at sequi reiciendis
        reprehenderit aliquid culpa, commodi perferendis assumenda veniam soluta perspiciatis ex iste eum voluptatibus
        corporis veritatis.</p>
    <p>Lorem ipsum dolor sit amet consectetur adipisicing elit. Vero debitis similique provident at sequi reiciendis
        reprehenderit aliquid culpa.</p>
    <p>Lorem ipsum dolor, sit amet consectetur adipisicing elit. Nemo quod minima ad possimus esse voluptates totam.
        Accusantium repudiandae deleniti velit culpa ad reprehenderit hic cum magni doloribus, debitis quisquam impedit
        quis harum? Accusamus nemo iusto cum qui dolorem beatae assumenda reiciendis unde sunt ipsam doloremque ut
        dolore officia, voluptatibus ad earum labore quam tempore.</p>

    <script>
        let str = 'voluptatibus_ad_earum_labore_quam_tempore'
        function ucWord(str, identifier = ' ') {
            const lowerStr = str.toLowerCase();
            const arrayOfString = lowerStr.split(identifier);
            const formatArray = arrayOfString.map(item => {
                return item.charAt(0).toUpperCase() + item.slice(1)
            })

            return formatArray.join(' ');
        }
        // console.log(ucWord('hamiDur/isLaM', '/'));

        function isString(value) {
            if (typeof value === 'string') {
                return true;
            }
            return false
        }

        function sum(n1, n2) {
            if (isString(n1) || isString(n2)) {
                throw TypeError('অক্ষর এখানে গ্রহণযোগ্য নয়');
            } else {
                return n1 + n2;
            }
        }
        // console.log(sum('anisur', 2));

        function substract(n1, n2) {
            if (isString(n1) || isString(n2)) {
                throw TypeError('অক্ষর এখানে গ্রহণযোগ্য নয়');
            } else {
                return n1 - n2;
            }

        }

        // console.log(substract('anisur', 1));

        function multiple(n1, n2) {
            if (isString(n1) || isString(n2)) {
                throw TypeError('অক্ষর এখানে গ্রহণযোগ্য নয়');
            } else {
                return n1 * n2;
            }
        }
        // console.log(multiple(3, 4));

        function divide(n1, n2) {
            if (isString(n1) || isString(n2)) {
                throw TypeError('অক্ষর এখানে গ্রহণযোগ্য নয়');
            } else if (n2 > 0) {
                return n1 / n2;
            } else {
                throw TypeError('Please provide correct value.');
            }
        }
        // console.log(divide(6, 3));

        const age = 14;

        if (age >= 60) {
            console.log('You are old man.');
        } else if (age <= 18) {
            console.log('You are so younger');
        } else {
            console.log('You are permited.');
        }
    </script>
</body>

</html>
	<!DOCTYPE html>
	<html lang="en">

	<head>
	<meta charset="UTF-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Class-3</title>
	</head>

	<body>
	<h2>This is post headline</h2>
	<p>Lorem ipsum dolor sit amet consectetur adipisicing elit. Vero debitis similique provident at sequi reiciendis
	reprehenderit aliquid culpa, commodi perferendis assumenda veniam soluta perspiciatis ex iste eum voluptatibus
	corporis veritatis.</p>
	<p>Lorem ipsum dolor sit amet consectetur adipisicing elit. Vero debitis similique provident at sequi reiciendis
	reprehenderit aliquid culpa.</p>
	<p>Lorem ipsum dolor, sit amet consectetur adipisicing elit. Nemo quod minima ad possimus esse voluptates totam.
	Accusantium repudiandae deleniti velit culpa ad reprehenderit hic cum magni doloribus, debitis quisquam impedit
	quis harum? Accusamus nemo iusto cum qui dolorem beatae assumenda reiciendis unde sunt ipsam doloremque ut
	dolore officia, voluptatibus ad earum labore quam tempore.</p>

	<script>
	let str = 'voluptatibus_ad_earum_labore_quam_tempore'
	function ucWord(str, identifier = ' ') {
	const lowerStr = str.toLowerCase();
	const arrayOfString = lowerStr.split(identifier);
	const formatArray = arrayOfString.map(item => {
	return item.charAt(0).toUpperCase() + item.slice(1)
	})

	return formatArray.join(' ');
	}
	// console.log(ucWord('hamiDur/isLaM', '/'));

	function isString(value) {
	if (typeof value === 'string') {
	return true;
	}
	return false
	}

	function sum(n1, n2) {
	if (isString(n1) \|\| isString(n2)) {
	throw TypeError('অক্ষর এখানে গ্রহণযোগ্য নয়');
	} else {
	return n1 + n2;
	}
	}
	// console.log(sum('anisur', 2));

	function substract(n1, n2) {
	if (isString(n1) \|\| isString(n2)) {
	throw TypeError('অক্ষর এখানে গ্রহণযোগ্য নয়');
	} else {
	return n1 - n2;
	}

	}

	// console.log(substract('anisur', 1));

	function multiple(n1, n2) {
	if (isString(n1) \|\| isString(n2)) {
	throw TypeError('অক্ষর এখানে গ্রহণযোগ্য নয়');
	} else {
	return n1 * n2;
	}
	}
	// console.log(multiple(3, 4));

	function divide(n1, n2) {
	if (isString(n1) \|\| isString(n2)) {
	throw TypeError('অক্ষর এখানে গ্রহণযোগ্য নয়');
	} else if (n2 > 0) {
	return n1 / n2;
	} else {
	throw TypeError('Please provide correct value.');
	}
	}
	// console.log(divide(6, 3));

	const age = 14;

	if (age >= 60) {
	console.log('You are old man.');
	} else if (age <= 18) {
	console.log('You are so younger');
	} else {
	console.log('You are permited.');
	}
	</script>
	</body>

	</html>