带有'yield'关键字的Javascript生成器

Question

I'm experimenting with HTML5's new canvas tag, in which I render and animate some simple shapes. My canvas's script has the following function:

function initializeSquarePositions(rows, columns) {
    for (var x = 0; x < canvas.width; x += canvas.width / columns)
        for (var y = 0; y < canvas.height; y += canvas.height / rows)
            yield {x: x, y: y};
}

For some reason, this code executes wonderfully in Firefox, but it does not work at all in Chrome. Both browsers are the latest version, and I have my script tag marked as version=1.8 (version=1.7 didn't work either).

Is the 'yield' keyword not working in Chrome or something? I sure hope it does; generators make for cleaner code!

I couldn't find any concrete yes or no answers to that question.

Answer 1

Iterators and Generators are (for now) Mozilla-extensions, this means that you will be able to use them only on Mozilla Implementations (JavaScript (TM)).

I said "for now" because those features will be probably introduced in the next version of the ECMAScript Standard, ECMAScript Harmony .

Answer 2

Is the 'yield' keyword not working in Chrome or something?

That's it. Sorry. yield and let aren't in Chrome (or Opera, or Safari, or IE) yet.