Detect for...of Loop Support in JavaScript

Question

Is this possible? Example:

var parts = [1,2,3,4,5];
for (part of parts) {
    console.debug(part);
}

I want to detect if doing this is possible.

If you hover over the (C) icon in the table @JonathanLonowski links to, it shows the source of his test for that feature. — Heretic Monkey
– Heretic Monkey, Commented Aug 17, 2013 at 1:48

nmaier · Accepted Answer · 2013-08-17 01:47:09Z

9

You can always try-catch such stuff. But you need eval as well, as some javascript engines will bail with a SyntaxError early.

try {
  eval("for (var i of []);");
  console.log("yep");
} catch(ex) {
  console.log("nope");
}

Tested in Firefox ("yep") and Chrome ("nope").

answered Aug 17, 2013 at 1:47

nmaier

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