Practical No.1: Write simple JavaScript with HTML for arithmetic expression evaluation and message printing.

What is HTML?

· HTML stands for Hypertext markup language

· HTML is the standard markup language for creating Web pages.

· HTML describes the structure of a Web page.

· HTML consists of series of elements and tags represent these elements.

What is Javascript?

· Javascript is a dynamic computer programming language.It is lightweight and commonly used web pages of client side script to interact with user and make a dyanamic page.

· Javascript was first known as Live script and Netscape introduced it in 1995.

Features of JavaScript:

1. Light weighted

2. Case sensitive.

3. Control statement

4. Looping statement

5. Client side technology

6. Event handling

7. Interpreter based

8. In build function

Uses of Javascript:

1. Client side validation

2. Dynamic dropdown menus

3. Open and close new windows

4. Manipulated HTML layers

5. Enhance the interfaces HTML

6. Animated elements on a page

7. Fixed browser problems

How to write Javascript document?

· The Javascript can be directly embedded within the HTML,document or it can be stored as external files.

· Syntax:

<script ...>

JavaScript code

</script>

· The script has takes two important attributes:

· Language

· Type

Sample Program: Hello World…

<html>

<body>

<!—

Document.write (“Hello world”);

</script>

</body>

</html>

Explanation:

1. Document.write: This statement is used to display desired message on webbrowser.

2. Comments in java:

3. The // is a single line comments

4. The /*…*/ can be used as multi line comments

5. The XHTML  is also known as javascript

Arithmetic Operators:

1. Addition (+):-This operator is used to add two operands.

2. Subtraction (-):-This operator is used to subtract two operands.

3. Multiplication (*):-This operator is used to multiple two operand.

4. Division (/):-This operator is used to divide two operands.

5. Modulus (%):-This operator is used to check the Remainder.

6. Increment (++):-This operator is used to increment operand by 1.

7. Decrement (--):-This operator is used to decrement operand by1.

Conclusion: We understand that how to write javascript with HTML for arithmetic expression evaluation and message printing.

Practical No.1: Write simple JavaScript with HTML for arithmetic expression evaluation and message printing.

<html>

<body>

<script type=""text/javascript>

var a=10;
var b=20;
document.write("Addition of a and b:- ");
var c=a+b;
document.write(c); document.write("Substraction of a and b:- ");
var d=a-b;
document.write(d);
document.write("Multiplication of a and b:- "); var e=a*b;
document.write(e); document.write("Division of a and b:- ");
var f=a/b;
document.write(f);
document.write("Module of a and b:- ");
var g=a%b;
document.write(g);
document.write("Decrement of a:- ");
var h=a--;
document.write(h); document.write("Increment of a:- ");
var i=a++;
document.write(i);

</script>

</body>

</html>

Output:

<html>

<body>

var a = 10; var b = 20;

document.write("Addition of a(" + a + ") and b(" + b + ") :- ");

var c = a + b;

document.write(c);

document.write("Substraction of a(" + a + ") and b(" + b + ") :- ");

var d = a - b; document.write(d);

document.write("Multiplication of a("+ a + ") and b(" + b + ") :- "); var e = a * b; document.write(e);

document.write("Division of a(" + a + ") and b(" + b + ") :- ");

var f = a / b; document.write(f);

document.write("Module of a(" + a + ") and b(" + b + ") :- "); var g = a % b; document.write(g);

document.write("Square of a(" + a + "):- ");

var h = a * a; document.write(h);

document.write("Cube of a(" + a + ") :-");

var i = a * a * a;

document.write(i);

</script>

</body>

</html>

Output:

OK BRUH!

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