{"id":704,"date":"2021-04-21T05:57:46","date_gmt":"2021-04-21T05:57:46","guid":{"rendered":"https:\/\/bcisnotes.com\/fourthsemester\/?p=704"},"modified":"2021-04-21T05:57:46","modified_gmt":"2021-04-21T05:57:46","slug":"javascript-operators-client-side-scripting-bcis-notes","status":"publish","type":"post","link":"https:\/\/bcisnotes.com\/fourthsemester\/javascript-operators-client-side-scripting-bcis-notes\/","title":{"rendered":"JavaScript Operators || Client Side Scripting || BCIS Notes"},"content":{"rendered":"
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JavaScript Operators<\/h1>\n<\/div>\n<\/div>\n
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Operators are symbols or keywords that tell the JavaScript engine to perform some sort of actions. For example, the addition (+) symbol is an operator that tells the JavaScript engine to add two variables or values, while the equal-to (==), greater-than (>), or less-than (<) symbols are the operators that tell the JavaScript engine to compare two variables or values.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Arithmetic Operator<\/h3>\n\n\n\n\n\n\n\n\n
Operator<\/b><\/td>\nDescription<\/b><\/td>\nExample<\/b><\/td>\nResult<\/b><\/td>\n<\/tr>\n
+<\/td>\nAddition<\/td>\n$a + $b<\/td>\nSum of $a and $b<\/td>\n<\/tr>\n
–<\/td>\nSubtraction<\/td>\n$a – $b<\/td>\nDifference of $a and $b<\/td>\n<\/tr>\n
*<\/td>\nMultiplication<\/td>\n$a * $b<\/td>\nProduct of $a and $b<\/td>\n<\/tr>\n
\/<\/td>\nDivision<\/td>\n$a \/ $b<\/td>\nQuotient of $a and $b<\/td>\n<\/tr>\n
%<\/td>\nModulus<\/td>\n$a % $b<\/td>\nRemainder of $a divided by $b, and so on.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

var x = 10;<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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var y = 5;
\nalert(x + y); \/\/ 0utputs: 15<\/p>\n

alert(x – y); \/\/ 0utputs: 5<\/p>\n

alert(x * y); \/\/ 0utputs: 50<\/p>\n

alert(x \/ y); \/\/ 0utputs: 2<\/p>\n

alert(x % y); \/\/ 0utputs: 2<\/p>\n

JavaScript Assignment Operators<\/h3>\n

The assignment operators are used to assign values to variables.<\/p>\n<\/div>\n<\/div>\n

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Operator<\/b><\/td>\nDescription<\/b><\/td>\nExample<\/b><\/td>\n\n
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Is The Same As<\/strong><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

=<\/td>\n\n
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Assign<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/td>\n

$a = $b<\/td>\n$a = $b<\/td>\n<\/tr>\n
+=<\/td>\n\n
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Add and assign<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/td>\n

$a += $b<\/td>\n$a= $a + $b<\/td>\n<\/tr>\n
-=<\/td>\n\n
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Subtract and assign<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/td>\n

$a -= $b<\/td>\n$a= $a – $b<\/td>\n<\/tr>\n
*=<\/td>\n\n
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Multiply and assign<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/td>\n

$a *= $b<\/td>\n$a= $a * $b<\/td>\n<\/tr>\n
\/=<\/td>\n\n
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Divide and assign quotient<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/td>\n

$a \/= $b<\/td>\n$a= $a \/ $b<\/td>\n<\/tr>\n
%=<\/td>\n\n
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Divide and assign modulus<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/td>\n

$a %= $b<\/td>\n$a= $a % $b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
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var a; \/\/ Declaring Variable
\na = 20;
\nalert(a); \/\/ Outputs: 20<\/p>\n

a = 20;
\na += 30;
\nalert(a); \/\/ Outputs: 50<\/p>\n

a = 40;<\/p>\n

a -= 20;<\/p>\n<\/div>\n<\/div>\n

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alert(a); \/\/ Outputs: 20<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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a = 5;
\na *= 15;
\nalert(a); \/\/ Outputs: 75<\/p>\n

a = 40;
\na \/= 10;
\nalert(a); \/\/ Outputs: 4<\/p>\n

a = 100;
\na %= 15;
\nalert(a); \/\/ Outputs: 10<\/p>\n

JavaScript String Operators<\/h3>\n

There are two operators which can also be used be for strings.<\/p>\n\n\n\n\n\n
Operator<\/b><\/td>\nDescription<\/b><\/td>\nExample<\/b><\/td>\nResult<\/b><\/td>\n<\/tr>\n
+<\/td>\n\n
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Concatenation<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/td>\n

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str1 + str2<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/td>\n

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Concatenation of str1 and str2<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

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+=<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/td>\n

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Concatenation assignment<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/td>\n

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str1 += str2<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/td>\n

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Appends the str2 to the str1<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Example<\/p>\n

var str1 = “Hello”;
\nvar str2 = ” World!”;<\/p>\n

alert(str1 + str2); \/\/ Outputs: Hello World!<\/p>\n

str1 += str2;
\nalert(str1); \/\/ Outputs: Hello World!<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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JavaScript Incrementing and Decrementing<\/h3>\n

The increment\/decrement operators are used to increment\/decrement a variable’s value.<\/p>\n<\/div>\n<\/div>\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n
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Operator<\/strong><\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Name<\/strong><\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Effect<\/strong><\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

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++a<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Pre-increment<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Increments a by one, then returns a<\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

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a++<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Post-increment<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Returns a, then increments a by one<\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

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–a<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Pre-decrement<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Decrements a by one, then returns a<\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

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a–<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Post-decrement<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Returns a, then decrements a by one<\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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var a; \/\/ Declaring Variable<\/p>\n

a = 12;
\nalert(++a); \/\/ Outputs: 13<\/p>\n

alert(a); \/\/ Outputs: 13<\/p>\n

a = 12;
\nalert(a++); \/\/ Outputs: 12<\/p>\n

alert(a); \/\/ Outputs: 13<\/p>\n

a = 12;
\nalert(–a); \/\/ Outputs: 11<\/p>\n

alert(a); \/\/ Outputs: 11<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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a = 12;
\nalert(a–); \/\/ Outputs: 12<\/p>\n

alert(a); \/\/ Outputs: 11<\/p>\n

JavaScript Logical Operators<\/h3>\n

The logical operators are typically used to combine conditional statements.<\/p>\n<\/div>\n<\/div>\n\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n
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Operator<\/strong><\/p>\n<\/div>\n<\/div>\n<\/td>\n

\"page19image32848896\"<\/p>\n
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Name<\/strong><\/p>\n<\/div>\n<\/div>\n

\"page19image32849280\"<\/td>\n

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Example<\/strong><\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Result<\/strong><\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

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&&<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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And<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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a && b<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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True if both a and b are true<\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

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||<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Or<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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a || b<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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True if either a or b is true<\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

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!<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Not<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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!a<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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True if a is not true<\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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var year = 2021;<\/p>\n

\/\/ Leap years are divisible by 400 or by 4 but not 100
\nif((year % 400 == 0) || ((year % 100 != 0) && (year % 4 == 0))){<\/p>\n

alert(year + ” is a leap year.”);<\/p>\n

} else{<\/p>\n

alert(year + ” is not a leap year.”); }<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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JavaScript Comparison Operators<\/h3>\n

The comparison operators are used to compare two values in a Boolean fashion.<\/p>\n<\/div>\n<\/div>\n\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n\n
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Operator<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Name<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Example<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Result<\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

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==<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Equal<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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a == b<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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True if a is equal to b<\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

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===<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Identical<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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a === b<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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True if a is equal to b, and they are of the same type<\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

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!=<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Not equal<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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a != b<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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True if a is not equal to b<\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

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!==<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Not identical<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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a !== b<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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True if a is not equal to b, or they are not of the same type<\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

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<<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Less than<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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a<b<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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True if a is less than b<\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

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><\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Greater than<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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a>b<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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True if a is greater than b<\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

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>=<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Greater than or equal to<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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xa>= b<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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True if a is greater than or equal to b<\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n

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<=<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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Less than or equal to<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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xa<= b<\/p>\n<\/div>\n<\/div>\n<\/td>\n

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True if a is less than or equal to b<\/p>\n<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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var a = 35; var b = 45; var c = “35”;<\/p>\n

alert(a == c); \/\/ Outputs: true<\/p>\n

alert(a === c); \/\/ Outputs: false<\/p>\n

alert(a != b); \/\/ Outputs: true<\/p>\n

alert(a !== c); \/\/ Outputs: true<\/p>\n

alert(a < c); \/\/ Outputs: true<\/p>\n

alert(a > b); \/\/ Outputs: false<\/p>\n

alert(a <= b); \/\/ Outputs: true<\/p>\n

alert(a >= b); \/\/ Outputs: false<\/p>\n

If you liked our content JavaScript Operators, then you will also\u00a0JavaScript Data Types\u00a0<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

JavaScript Operators Operators are symbols or keywords that tell the JavaScript engine to perform some sort of actions. For example, the addition (+) symbol is […]<\/a><\/p>\n<\/div>","protected":false},"author":3,"featured_media":705,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[227,226,231],"yoast_head":"\nJavaScript Operators || Client Side Scripting || BCIS Notes<\/title>\n<meta name=\"description\" content=\"JavaScript Operators are symbols or keywords that tell the JavaScript engine to perform some sort of actions.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bcisnotes.com\/fourthsemester\/javascript-operators-client-side-scripting-bcis-notes\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"JavaScript Operators || Client Side Scripting || BCIS Notes\" \/>\n<meta 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