javascript operators
&& logical and
|| logical or
! logical notjavascript operators
&& logical and
|| logical or
! logical notjavascript operators
= assignment operator
var x = 2
+ addition operator
2 + 3 = 5
- subtraction operator
2 - 3 = -1
* multiplicative operator
2 * 3 = 6
/ division operator
3 / 2 = 1.5
% modulus operator
3 % 2 = 1
++ increment operator
var x = 2
x++
// x now equals 3 (x = x + 1 in literal notation)
-- decrement operator
var x = 3
x--
// x now equals 2 (x = x - 1 in literal notation)
+= additive reassignment operator
var x = 2
x += 3
// x now equals 5 (x = x + 3 in literal notation)
-= subtractive reassignment operator
var x = 3
x -= 2
// x now equals 1 (x = x - 2 in literal notation)
*= multiplicative reassignment operator
var x = 3
x *= 2
// x now equals 6 (x = x * 2 in literal notation)
/= division reassignment operator
x = 3
x /= 2
// x now equals 1.5 (x = x / 2 in literal notation)
%= modulus reassignment operator
x = 3
x %= 2
// x now equals 1 (x = x % 2 in literal notation)
== logical comparison operator
2 == 2 // Returns true
2 == "2" // Returns true
2 == 3 // Returns false
=== logical strict comparison operator
2 === 2 // Returns true
2 === "2" // Returns false
2 === 3 // Returns false
!= logical not equal comparison operator
2 != 3 // Returns true
2 != 2 // Returns false
2 != "2" // Returns false
!== logical not equal strict comparison operator
2 !== 3 // Returns true
2 !== 2 // Returns false
2 !== "2" // Returns true
< logical less than comparison operator
2 < 3 // Returns true
3 < 2 // Returns false
> logical greater than comparison operator
3 > 2 // Returns true
2 > 3 // Returns false
3 > 3 // Returns false
<= logical less than or equal to comparison operator
2 <= 3 // Returns true
3 <= 3 // Returns true
3 <= 2 // Returns false
>= logical less than or equal to comparison operator
3 >= 2 // Returns true
3 >= 3 // Returns true
2 >= 3 // Returns false
|| logical or operator
x = 3
(x == 3 || x == 2) // Returns true
(x == 2 || x == 1) // Returns false
&& logical and operator
x = 2
y = 3
(x == 2 && y == 3) // Returns true
(x == 2 && y == 4) // Returns falsejavascript function to add two numbers
<!--Add two integer numbers using JavaScript.-->
<html>
<head>
<title>Add two integer numbers using JavaScript.</title>
<script type="text/javascript">
function addTwoNumbers(textBox1, textBox2){
var x=document.getElementById(textBox1).value;
var y=document.getElementById(textBox2).value;
var sum=0;
sum=Number(x)+Number(y);
alert("SUM is: " + sum);
}
</script>
</head>
<body>
<h1>Add two integer numbers using JavaScript.</h1>
<b>Enter first Number: </b><br>
<input type="text" id="textIn1"/><br>
<b>Enter second Number: </b><br>
<input type="text" id="textIn2"/><br><br>
<input type="button" id="btnSum" value="Calculate SUM" onClick="addTwoNumbers('textIn1','textIn2')"/>
</body>
</html>or operator in javascript
//The OR operator in Javascript is 2 verticals lines: ||
var a = true;
var b = false;
if(a || b) {
//one of them is true, code inside this block will be executed
}javascript operators
== equal to
=== equal value and equal type
!= not equal
!== not equal value or not equal type
> greater than
< less than
>= greater than or equal to
<= less than or equal to
? ternary operatorJavaScript Operators
var x = 5; // assign the value 5 to x
var y = 2; // assign the value 2 to y
var z = x + y; // assign the value 7 to z (5 + 2)Copyright © 2021 Codeinu
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