operatorsloops.md

Opertors and Loops

Assignment Operators

• = assigns variable to a value
• += adds value to existing value held in variable and assigns combined value to that variable
• ** exponent
• % remainder
• x << y left shift assignment
• x >> y right shift assignment
• && = AND
• || = OR
• ?? = nullish coalescing operator

Destructuring: var [four, five, six] = 1 sets all elements of the list to 1

Comparison Operators

• == equal to, returns true if values are equal
• != not equal
• === strict equal - true if operands are both equal and the same data type
• !== strict not equal - true if operands are not equal but have the same data type, or have different data types
• > greater than
• < less than
• >= greater than or equal to
• <= less than or equal to

Arithmetic Operators

• % remainder
• ++ increment
• -- decrement
• - unary negation, returns negation of value
• + unary plus, converts operand to a number, e.g. converts a string to a number
• ** exponent operator

Booleans

• && AND
• || OR
• ! NOT

Urnary Operators

• delete deletes object's property
• typeof returns objects data type
• void evaluates an expression without returning a value

Relational Operators

• in - checks for a property in an object

Loops and Iteration

• for
• do...while
• while
• for...in
• for...of
• labeled

Links

• Expressions and Operators
• Loops and Iteration