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Object.getOwnPropertyDescriptors(O) · GitHub
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March 4, 2014 19:28
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Object.getOwnPropertyDescriptors(O)
Object.getOwnPropertyDescriptors(O)
When the getOwnPropertyDescriptors function is called, the following steps are taken:
Let obj be ToObject(O ).
ReturnIfAbrupt(obj ).
Let keys be the result of calling the [[OwnPropertyKeys ]] internal method of obj .
ReturnIfAbrupt(keys ).
Let descriptors be the result of the abstract operation ObjectCreate with the intrinsic object %ObjectPrototype% as its argument.
Let gotAllNames be false .
Repeat while gotAllNames is false ,
1. Let next be the result of IteratorStep(keys ).
1. ReturnIfAbrupt( next ).
1. If next is false , then let gotAllNames be true .
1. Else,
Let nextKey be IteratorValue(next ).
Let nextKey be ToPropertyKey(nextKey ).
ReturnIfAbrupt(nextKey ).
Let desc be the result of calling the [[GetOwnProperty]] internal method of obj with argument nextKey .
ReturnIfAbrupt(desc ).
Let descriptor be FromPropertyDescriptor(desc ).
ReturnIfAbrupt(descriptor ).
Let status be the result of CreateDataProperty(descriptors , nextKey , descriptor ).
Assert: status is not an abrupt completion.
Return descriptors .
You can’t perform that action at this time.
note: to give right credits, this came out from a previous revision proposed by anba
example: a polyfill that works already in ES5 can be found here