Iterators and generators - JavaScript | MDN
« Previous Next » Iterators and Generators bring the concept of iteration directly into the core language and provide a mechanism for customizing the behavior of for...of loops. For details, see also: Iteration protocols for...of function* and Generator yield and yield* In JavaScript an iterator is an object which defines a sequence and potentially a return value upon its termination. Specifically
for...of - JavaScript | MDN
variable Receives a value from the sequence on each iteration. May be either a declaration with const, let, or var, or an assignment target (e.g. a previously declared variable, an object property, or a destructuring assignment pattern). Variables declared with var are not local to the loop, i.e. they are in the same scope the for...of loop is in. iterable An iterable object. The source of the seq
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