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javascript Programming Glossary: jsperf

BackboneJS Rendering Problems

http://stackoverflow.com/questions/12004534/backbonejs-rendering-problems

inserted into the DOM of the parent. Have a look at this jsperf test comparing different methods of rendering The gist of it.. data http jsfiddle.net nikoshr UeefE Note that the jsperf shows that the template can be be split into subtemplates without..

What are the differences between Chosen and Select2?

http://stackoverflow.com/questions/13575531/what-are-the-differences-between-chosen-and-select2

the only comparison I've found is a somewhat inconclusive jsperf test page. Does any of these libraries have any advantages over..

Storing Image Data for offline web application (client-side storage database)

http://stackoverflow.com/questions/14113278/storing-image-data-for-offline-web-application-client-side-storage-database

PRO Much faster than IndexedDB for blobs according to jsperf http jsperf.com indexeddb vs localstorage 15 page 2 IndexedDB.. faster than IndexedDB for blobs according to jsperf http jsperf.com indexeddb vs localstorage 15 page 2 IndexedDB Good support.. a file system deletes updates PRO see speed tests http jsperf.com indexeddb vs localstorage 15 See this article on storing..

What makes my.class.js so fast?

http://stackoverflow.com/questions/14213074/what-makes-my-class-js-so-fast

also being JIT compiled javascript oop instantiation jsperf share improve this question I don't mean to offend anyone..

parseInt vs unary plus - when to use which

http://stackoverflow.com/questions/17106681/parseint-vs-unary-plus-when-to-use-which

var a parseInt 1 10 a 1 and this line var a 1 a 1 this jsperf test shows that the unary operator is much faster in the current..

Why is bind slower than a closure?

http://stackoverflow.com/questions/17638305/why-is-bind-slower-than-a-closure

scope so that scope traversal does not take place. Two jsperfs suggest that bind is actually much much slower than a closure.. as a comment to the above And I decided to write my own jsperf So why is bind so much slower 70 on chromium Since it is not..

Firefox bad RegEx performance

http://stackoverflow.com/questions/19680266/firefox-bad-regex-performance

How does jsPerf work?

http://stackoverflow.com/questions/4986245/how-does-jsperf-work

What is the formula behind these calculations Example http jsperf.com concatenation vs join Can anyone tell me Thanks in advance... me Thanks in advance. javascript performance benchmarking jsperf share improve this question I wrote Benchmark.js which jsPerf..

Is optimizing JavaScript for loops really necessary?

http://stackoverflow.com/questions/6973942/is-optimizing-javascript-for-loops-really-necessary

for loop share improve this question Fab run your own jsperf test on any version of IE. There you will see a consistent difference.. IE8 the method which pre caches the length is 31 faster. A jsperf test designed for this question gives quantitative results on.. question. In questions like this one should just go to jsperf to see what the real difference is rather than so much speculation...

Number.sign() in javascript

http://stackoverflow.com/questions/7624920/number-sign-in-javascript

x return typeof x 'number' x x 0 1 1 x x 0 NaN NaN Tools jsperf preformance tests fiddle type cast tests Improvements are welcome..

HTML5 Canvas Performance and Optimization Tips, Tricks and Coding Best Practices

http://stackoverflow.com/questions/8205828/html5-canvas-performance-and-optimization-tips-tricks-and-coding-best-practices

x and y position to a whole number. Here's a test case on jsperf showing how much faster using whole numbers is compared to using.. numbers before rendering. Faster than Math.round Another jsperf test shows that Math.round is not necessarily the fastest method..

What is the cost of '$(this)'?

http://stackoverflow.com/questions/10433014/what-is-the-cost-of-this

DOMElement this.length 1 return this I did some tests with jsPerf and I found that indeed caching the jQuery object has only a..

regex.test V.S. string.match to know if a string matches a regular expression

http://stackoverflow.com/questions/10940137/regex-test-v-s-string-match-to-know-if-a-string-matches-a-regular-expression

the difference is significant The answer once more is YES jsPerf I made shows the difference is ~30 ~60 depends on the browser..

How to round time to the nearest quarter hour in JavaScript?

http://stackoverflow.com/questions/4968250/how-to-round-time-to-the-nearest-quarter-hour-in-javascript

0 15 60 var h minutes 105 .5 0 hours 24 You can check the jsPerf test that shows Math.round is the slowest of the three while..

How does jsPerf work?

http://stackoverflow.com/questions/4986245/how-does-jsperf-work

does jsPerf work Today I visited jsPerf and now I am wondering p What is.. does jsPerf work Today I visited jsPerf and now I am wondering p What is œops sec How many iterations.. share improve this question I wrote Benchmark.js which jsPerf uses. ops sec stands for operations per second. That is how..

placeholder in ie9

http://stackoverflow.com/questions/6366021/placeholder-in-ie9

by Mathias Bynens a collaborator on HTML5 Boilerplate and jsPerf https github.com mathiasbynens jquery placeholder Demo Examples..

Is there a performance gain in including <script> tags as opposed to using eval?

http://stackoverflow.com/questions/8380204/is-there-a-performance-gain-in-including-script-tags-as-opposed-to-using-eval

script blocks . The results still show eval much faster. jsPerf http jsperf.com stackoverflow 8380204 eval vs script Thus the..