An item in an array isn't able to be customized in this way: it either exists or it doesn't. You can create properties with setters/getters, with differing enumerability, writability, and configurability. See GDC 2012: From Console to Chrome for more.Īt a basic level that stays within the realms of JavaScript, properties on objects are much more complex entities. Updated Note (dec 2012): Google representatives have videos on youtubes describing the inner workings of chrome itself (like when it switches from a linkedlist array to a fixed array, etc), and how to optimize them. Also the test is huge, hence I yet to fully analyze and evaluate the results : please edit it in =) Note 2: These wonderful performance results are not shared across browsers, especially More details can be seen extensively across several google IO videos. There can be very isolated optimised performance cases for array/object size less then an arbitrary size (24?). Note: These metrics applies only to large array/objects which v8 does not "entirely optimise out".
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |