if else in js | Sharp Tutorial

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If Else

In programming, decision making is used to specify the order in which statements are executed. In this tutorial, you will learn to write if…else statements to make decisions in your program.

The if statement verifies the given condition and decides whether a block of statements are executed or not based on the condition’s result. In JS, the if statement is classified into four types as follows …

Simple if statement
if – else statement
Multiple if statement
Nested if statement
if-else-if statement (if-else ladder)

An if statement can be followed by an optional else statement, which executes when the Boolean expression is false.

General syntax for if - else

  if(condition) 
  {
    /*statement to be executed for true condition*/
  }
  else 
  { 
     /*statement to be executed for false condition */
  }

Program to check if given no. is Even or Odd?

<html>
<title>JS If Else</title>
<head>
<script>
var n=parseInt(prompt("Enter the number"))
if(n%2==0)
alert("the number is even");
else
alert("the number is odd");
</script>
</head>
<body>
</body>
</html>

[codepen_embed height="265" theme_id="default" slug_hash="dyPpqwN" default_tab="js,result" user="rajputadesh"]See the Pen dyPpqwN by rajput adesh (@rajputadesh) on CodePen.[/codepen_embed]

Multiple If

Multiple if may be used

Simple if statement
if – else statement
Multiple if statement
Nested if statement
if-else-if statement (if-else ladder

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If Else

General syntax for if - else

Program to check if given no. is Even or Odd?

Multiple If

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