Tutorial by Topics: declarations

var foo [= value [, foo2 [, foo3 ... [, fooN]]]]; let bar [= value [, bar2 [, foo3 ... [, barN]]]]; const baz = value [, baz2 = value2 [, ... [, bazN = valueN]]]; See also: Reserved Keywords Scope

Declaration of identifier referring to object or function is often referred for short as simply a declaration of object or function.

infix [integer] ops infixl [integer] ops infixr [integer] ops Declaration componentMeaninginfixrthe operator is right-associativeinfixlthe operator is left-associativeinfixthe operator is non-associativeoptional digitbinding precedence of the operator (range 0...9, default 9)op1, ... , opn...