ecmascript 6 - Javascript "for of" fails in IE 11

I have the following bit of code to select and remove a d3.js node.

 if (d.children) {
        for (var child of d.children) {
            if (child == node) {
                d.children = _.without(d.children, child);
                update(root);
                break;
            }
        }
    }

This works fine in Chrome and Edge, but fails in IE-11 with missing ;. It appears to be a problem with using 'of' to loop. Has anyone else run across this issue with IE before and if so how did you resolve it?

I have the following bit of code to select and remove a d3.js node.

 if (d.children) {
        for (var child of d.children) {
            if (child == node) {
                d.children = _.without(d.children, child);
                update(root);
                break;
            }
        }
    }

Share Improve this question edited Sep 24, 2016 at 18:02 altocumulus 21.6k13 gold badges64 silver badges86 bronze badges asked Sep 23, 2016 at 22:26 Michael McCurley 1931 gold badge2 silver badges8 bronze badges

1 developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/… note the browser compatibility – Kevin B Commented Sep 23, 2016 at 22:31
Is there a reason you can't use for..in? – maurycy Commented Sep 24, 2016 at 12:50

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1 Answer 1

Sorted by: Reset to default 19

This is an ES2015 (also know as ES6) feature and only supported in modern browsers. Generally you would only use this construct together with a transpiler like babel in order to support older browsers.

You can see the compatibility table for the for...of statement here: https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Statements/for...of

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ecmascript 6 - Javascript "for of" fails in IE 11 - Stack Overflow

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