Vendor Prefix Enumeration - Note prior to Chrome 43 we have to use instances to get values back. So there is a switch for some of the known instances, but this is heavily incomplete. Starting with Chrome 43 more information is on the prototype. Still, things like window and CSSStyleDeclaration lack type system and so you still need an instance f…

vendor_enum.js

// http://jsfiddle.net/8n6c1dpz/12/
var out = document.getElementById("output");

var vendorPrefixes = [/^ms|^onms/i, /^moz|^onmoz/i, /^webkit|^onwebkit/i];
var vendorProps = vendorPrefixes.map(function (prefix) {
    return Object.getOwnPropertyNames(window).filter(function (name) {
        try {
            return (this[name].prototype && this[name].prototype.constructor === this[name]);
        } catch (exc) {
            return false;
        }
    }).sort().map(function (name) {
        var props = [name]; // Add the name for constructors that are prefixed
        switch (name) {
            case "CSSStyleDeclaration":
                Array.prototype.push.apply(props, Object.keys(window.getComputedStyle(document.body)));
                break;
            case "HTMLElement":
                Array.prototype.push.apply(props, Object.keys(document.body));
                break;
            case "HTMLDocument":
                Array.prototype.push.apply(props, Object.keys(document));
                break;
            case "Window":
                Array.prototype.push.apply(props, Object.keys(window));
                break;
        }
        return props.concat(Object.keys(this[name].prototype)).filter(function (prop) {
            return prefix.test(prop);
        });
    }).reduce(function (prev, curr) {
        return prev.concat(curr);
    }, []).sort().filter(function (prop, index, arr) {
        return prop !== arr[index-1];
    });
});
out.innerHTML = vendorProps.map(function (props, index) {
    return ["Prefix " + vendorPrefixes[index] + ": " + props.length].concat(props).join("\n");
}).join("\n");