Operators in JavaScript

Operators

1. Operators are symbols or keywords used in programming to perform operations on data, such as mathematical calculations, comparisons, and logical evaluations. They act on operands (variables or values) to produce a specific result, forming the foundation of data manipulation.

Arithmetic

• Arithmetic: Used for math, including addition (+), subtraction (-), multiplication (*), division (/), and modulus (%).

Assignment

• Assigns values to variables, such as = and compound operators like +=, -=, or *=.

Comparison Operators

These operators are used to compare two values
and then returns boolean values (true or false).

• == (Equal value, with type coercion) === (Equal value and equal type; always prefer this strict equality) != (Not equal value) !== (Not equal value or not equal type/ Strict not equal) > (Greater than) < (Less than) >= (Greater than or equal to) <= (Less than or equal to)

Logical Operators

• These operators are used to combine or modify boolean expressions. && (Logical AND) || (Logical OR) ! (Logical NOT) ?? (Nullish coalescing, returns the right operand if the left is null or undefined, otherwise returns the left).

Other Operators

• String Concatenation Operator (+): When one of the operands is a string, the + operator concatenates the strings.

• Bitwise Operators: Perform operations on the binary representations of numbers (e.g., &, |, ^, ~, <<, >>, >>>)

1. Conditionals

• Use if to specify a code block to be executed, if a specified condition is true

• Use else to specify a code block to be executed, if the same condition is false

• Use else if to specify a new condition to test, if the first condition is false.