Object.create not supported in ie8

Question

I came across an issue with a plugin that uses object.create in jquery to create a date dropdown. I just noticed in IE 8 that it is throwing an error of:

SC         


        

Answer 1

There are several shims that provide this, including this one.

Note that Object.create can't be perfectly shimmed, though, because amongst other things it can create non-enumerable properties or properties with getters and setters, which you can't do on all pre-ES5 browsers. (You can do getters and setters on some pre-ES5 browsers using proprietary syntax, but not on IE8 I don't believe.) It can only be pseudo-shimmed.

But a pseudo-shim will do for the use-case you've quoted.

Just for completeness, here's a simple version of the part that can be shimmed:

if (!Object.create) {
    Object.create = function(proto, props) {
        if (typeof props !== "undefined") {
            throw "The multiple-argument version of Object.create is not provided by this browser and cannot be shimmed.";
        }
        function ctor() { }
        ctor.prototype = proto;
        return new ctor();
    };
}