Implementing Conditional Statements in JavaScript

0
1982

In this session today we will study the conditional statements of java script which includes
if ,if. .else ,if…..else if..else and switch statement.

  • To implement the examples of conditional statements in JavaScript follow the steps given below :
    1. To implement the above mentioned conditional statements write the following code in Notepad++ or any other text editor.

      <!Doctype html>
      <html>
      	<head>
      		<title>Javascript Conditionals</title>
      	</head>
      	<body>
      
      	
      	
      	<h1>This is an if statement</h1>
      	<script>
      	x = 5;
      	if(x > 2){
      		document.write(+x+'  is greater');
      	}
      	</script>
        <br />
        <br />
       
      
      
      
      <h1>This is an if else statement</h1>
      
      <script>
      	x = 1;
      	if(x > 2){
      		document.write(+x+ ' is greater');
      	} else {
      		document.write(+x+ ' is less');
      	}
      </script>
      
      <br />
      
      <br />
      
      <h1>This is an if else statement with relationaly operator</h1>
      <script>
      	x = 1;
      	if(x > 2 && x < 10){
      		document.write('True');
      	} else {
      		document.write('False');
      	}
      </script>
      <br />
      <br />
      
      
      <h1>Thi is an if statement with or operator   </h1>
      <script>
      	x = 20;
      	if(x < 10 || x == 20){
      		document.write('True');
      	} else {
      		document.write('False');
      	}
      </script>
      
      <br />
      <br />
      
      
      <h1> This is an if...else if...else statement</h1>
      <script>
      	x = 5;
      	if(x == 2){
      		document.write('x is 2');
      	} else if(x == 5) {
      		document.write('x is 5');
      	} else {
      		document.write('x is not 2 or 5');
      	}
      </script>
      
      <br />
      <br />
      
      
      <h1> This is an switch statement</h1>
      <script>
      	x = 4;
      	switch(x){
      		case 2:
      			document.write('x is 2');
      			break;
      		case 5:
      			document.write('x is 5');
      			break;
      		default:
      			document.write('x is not 2 or 5');
      			break;
      	}
      </script>
      
      <br />
      
      </script>
      
      </body>
      </html>
      
    2. After writing the code you will have the following view of your Notepad++ window :
    3. v1
      v2
      v3
      v4

    4. When you open your file in the browser you will have the following output :
    5. v5

    6. Thus we have understood the use and implementation of conditional statements in JavaScript.

    LEAVE A REPLY

    Please enter your comment!
    Please enter your name here