A Javascript control statement is used to control the flow of the program based on the specified condition. Javascript control statements: 1. If Statement 2. If else statement 3. if else if statement JavaScript If Statement: If the statement is used to execute a block of statements if the specified condition is true. Syntax: if(condition){ … Read more
Operator is a special symbol used for performing a specific task. e.g. A+B. Here + symbol represents the operator. Types of javascript operators: Javascript Arithmatic Operators Javascript Comparison Operators Javascript Bitwise Operators Javascript Logical Operators Javascript Assignment Operators Javascript Special Operators Example: <!DOCTYPE html> <html> <body> <h2>JavaScript Operators Test</h2> <script> var num1 = 5, num2 … Read more
Operator Description (?:) Conditional Operator typeof Returns the type of object instanceof Returns true if an object is an instance of an object type JavaScript Special Operators Example: <html> <head> <script type=”text/javascript”> var a = 10; var b = 20; var c = 10; var d = “String”; var linebreak = “<br />”; document.write … Read more
JavaScript assignment operators are used to assign the values to the operands. JavaScript Assignment Operators List: Operator Description Example = Assign a = 10 + 10; Result into a = 20 += Add and assign var a=10; a+=20; Result into a = 30 -= Subtract and assign var a=20; a+=10; Result into a = 10 … Read more
JavaScript logical operators are used to perform logical operations on the operands. JavaScript Logical Operators List: Operator Description Example && Logical AND (20==40 && 20==30) = false || Logical OR (20==40 || 20==30) = false ! Logical Not !(20==30) = true JavaScript Logical Operators Example: <html> <head> <script type=”text/javascript”> var a = true; var b … Read more
JavaScript bitwise operators are used to perform bitwise operations on the operands JavaScript Bitwise Operators List: Operator Description Example & Bitwise AND (10==25 & 20==35) = false | Bitwise OR (20==30 | 20==40) = false ^ Bitwise XOR (20==30 ^ 30==40) = false ~ Bitwise NOT (~20) = -20 << Bitwise Left Shift (10<<2) = … Read more
JavaScript comparison operators are used to compare the two operands. JavaScript Comparison Operators List: Operator Description Example == Is equal to 10==30 = false === Identical (equal and of the same type) 10==40 = false != Not equal to 20!=20 = true !== Not Identical 20!==20 = false > Greater than 30>10 = true >= … Read more
Arithmetic operators are used to perform arithmetic operations. JavaScript Arithmetic Operators List: Operator Description Example + Addition 30+20 = 50 – Subtraction 30-10 = 20 * Multiplication 10*10 = 100 / Division 50/10 = 5
JavaScript Data Types: JavaScript Data Types are the types of values that can be represented and manipulated by JavaScript. JavaScript Data Types List: 1. Numbers. 2. Strings. 3. Boolean. 4. Null. 5. Undefined. 6. Object. 7. Array. 8. RegExp. JavaScript variables: The variable is the name of a reserved memory location. In JavaScript, the var … Read more
JavaScript comments are used to explain the JavaScript code logic. JavaScript comments are ignored by JavaScript translators. It makes JavaScript code more readable. Types of JavaScript comments: 1. Single-line Comment 2. Multi-line Comment JavaScript Single-line Comment: The double forward slashes (//) are used for Single line comments. Anything between // to the end of the … Read more