由于
getOwnPropertyNames可以获取不可枚举的属性，因此可以使用它，并将其与沿原型链向上移动结合起来。
function getAllProperties(obj){ var allProps = [] , curr = obj do{ var props = Object.getOwnPropertyNames(curr) props.forEach(function(prop){ if (allProps.indexOf(prop) === -1) allProps.push(prop) }) }while(curr = Object.getPrototypeOf(curr)) return allProps}我在Safari 5.1上测试过
> getAllProperties([1,2,3])["0", "1", "2", "length", "constructor", "push", "slice", "indexOf", "sort", "splice", "concat", "pop", "unshift", "shift", "join", "toString", "forEach", "reduceRight", "toLocaleString", "some", "map", "lastIndexOf", "reduce", "filter", "reverse", "every", "hasOwnProperty", "isPrototypeOf", "valueOf", "__defineGetter__", "__defineSetter__", "__lookupGetter__", "propertyIsEnumerable", "__lookupSetter__"]
更新： 稍微重构了代码（添加了空格和花括号，并改进了函数名称）：
function getAllPropertyNames( obj ) { var props = []; do { Object.getOwnPropertyNames( obj ).forEach(function ( prop ) { if ( props.indexOf( prop ) === -1 ) { props.push( prop ); } }); } while ( obj = Object.getPrototypeOf( obj ) ); return props;}
