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Warning: This blog post is outdated. Instead, read chapter “Classes” in “JavaScript for impatient programmers”. Recently, TC39 decided on the final semantics of classes in ECMAScript 6 [1]. This blog post explains how their final incarnation works. The most significant recent changes were related to how subclassing is handled. Overview # class Point { constructor(x, y) { this.x = x; this.y = y; }
A function* declaration creates a GeneratorFunction object. Each time a generator function is called, it returns a new Generator object, which conforms to the iterator protocol. When the iterator's next() method is called, the generator function's body is executed until the first yield expression, which specifies the value to be returned from the iterator or, with yield*, delegates to another gene
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