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javascript Programming Glossary: lookupsGiven an x,y coordinate, I need to find all html elements underneath it http://stackoverflow.com/questions/1280660/given-an-x-y-coordinate-i-need-to-find-all-html-elements-underneath-it up approach #1 by keeping the calculated structure between lookups and only recalculate it when changes actually occur on the page... at how selector engines Sizzle in paticular cache their lookups and expires the cache when the DOM changes. It may seem contrived..
http://stackoverflow.com/questions/13351235/a-proper-approach-to-fb-auth to determine the login status of the user without any API lookups over HTTP it just reads the user ID from cookie so Facebook..
javascript multidimensional array? http://stackoverflow.com/questions/2529865/javascript-multidimensional-array it IBANInfo.byCC cc entry.countryCode entry Country code lookups then use the byCC property var countryCode AD var countryInfo..
Is it possible to create a “weak reference” in javascript? http://stackoverflow.com/questions/266704/is-it-possible-to-create-a-weak-reference-in-javascript anymore then entry can be deleted leaving future lookups on that key to return null. This is not really a weakref but..
Javascript getElementById lookups - hash map or recursive tree traversal? http://stackoverflow.com/questions/2711303/javascript-getelementbyid-lookups-hash-map-or-recursive-tree-traversal getElementById lookups hash map or recursive tree traversal Does the DOM have a hash..
jQuery question: what does it really mean? http://stackoverflow.com/questions/5305634/jquery-question-what-does-it-really-mean makes a lexical window variable that would mean faster lookups for global variables makes sure that undefined is indeed undefined..
Determine timezone from latitude/longitude without using web services like Geonames.org http://stackoverflow.com/questions/5584602/determine-timezone-from-latitude-longitude-without-using-web-services-like-geona populate the R Tree and it could then perform thousands of lookups per second both on a 5 year old PC . share improve this answer..
How to keep an Javascript object/array ordered while also maintaining key lookups? http://stackoverflow.com/questions/5773950/how-to-keep-an-javascript-object-array-ordered-while-also-maintaining-key-lookup Javascript object array ordered while also maintaining key lookups I have some data which I originally stored in a generic Javascript.. ... Now I can loop in the correct order but cannot do fast lookups e.g. data 3 without having to loop through the array. Is there..
Why is array.push sometimes faster than array[n] = value? http://stackoverflow.com/questions/614126/why-is-array-push-sometimes-faster-than-arrayn-value as a string JS engines tend to specialise on integer lookups as well so someObject someInteger will not convert the integer..
IndexedDB and many-to-many Relationships http://stackoverflow.com/questions/7408241/indexeddb-and-many-to-many-relationships and Relationships. Here are the two tables. You'd want key lookups on almost everything. Anything that doesn't say unique can be..
JavaScript multidimensional array http://stackoverflow.com/questions/7545641/javascript-multidimensional-array it IBANInfo.byCC cc entry.countryCode entry Country code lookups then use the byCC property var countryCode AD var countryInfo..
Performance of key lookup in JavaScript object http://stackoverflow.com/questions/7700987/performance-of-key-lookup-in-javascript-object share improve this question The V8 design docs imply lookups will be at least this fast if not faster Most JavaScript engines..
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