{"id":709,"date":"2011-08-19T15:50:10","date_gmt":"2011-08-19T13:50:10","guid":{"rendered":"http:\/\/blog.kodono.info\/wordpress\/?p=709"},"modified":"2011-08-19T15:50:10","modified_gmt":"2011-08-19T13:50:10","slug":"tester-les-performances-dun-code-javascript-via-un-benchmark-performance","status":"publish","type":"post","link":"https:\/\/blog.kodono.info\/wordpress\/2011\/08\/19\/tester-les-performances-dun-code-javascript-via-un-benchmark-performance\/","title":{"rendered":"Tester les performances d’un code Javascript via un benchmark [performance]"},"content":{"rendered":"

Je vous conseille de tester r\u00e9guli\u00e8rement votre code Javascript pour voir les performances par rapport \u00e0 d’autres commandes. Il arrive qu’on h\u00e9site entre deux (ou plus!) fa\u00e7ons de faire.<\/p>\n

Il existe le populaire http:\/\/jsperf.com\/<\/a> qui offre la possibilit\u00e9 de tester autant de bouts de code que l’on souhaite, en appelant m\u00eame quelques framework bien connus (comme jQuery).<\/p>\n

Mais si vous avez des besoins un peu plus particulier, ou vous devez travailler sur un environnement restreint, alors il est possible d’utiliser JSLitmus<\/a>. La fa\u00e7on de l’utiliser est incroyablement simple<\/strong> :<\/p>\n

<script src=\"JSLitmus.js\"><\/script>\r\n<script>\r\nJSLitmus.test('Mon premier test', function() { \/* do something *\/ });\r\nJSLitmus.test('Mon second test', function() { \/* do something else *\/ });\r\n<\/script><\/pre>\n
Cela fait appara\u00eetre un bouton “Run tests” avec un petit tableau. Une fois le test fini le tableau et un graphique vous donnent les informations n\u00e9cessaires, et en l’occurrence plus le chiffre (nombre d’op\u00e9rations\/sec) est grand et mieux c’est.<\/p>\n
Voici un exemple qui montre que l’utilisation de search<\/code> est bien plus rapide que de d\u00e9clarer une RegExp<\/code> puis appeler match<\/code> :<\/p>\n
<html>\r\n<head>\r\n<script src=\"http:\/\/www.broofa.com\/Tools\/JSLitmus\/JSLitmus.js\"><\/script>\r\n<\/head>\r\n<body>\r\n<script>\r\nJSLitmus.test('Mon premier test', function() { var regExp = new RegExp(\"pouet$\"); var ok = (\"pouet\".match(regExp) != null); });\r\nJSLitmus.test('Mon deuxi\u00e8me test', function() { var ok = (\"pouet\".search(\"pouet\") != -1); });\r\n<\/script>\r\n<\/body><\/html><\/pre>\n
R\u00e9sultat :
\n\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"
Je vous conseille de tester r\u00e9guli\u00e8rement votre code Javascript pour voir les performances par rapport \u00e0 d’autres commandes. Il arrive qu’on h\u00e9site entre deux (ou plus!) fa\u00e7ons de faire. Il existe le populaire http:\/\/jsperf.com\/ qui offre la possibilit\u00e9 de tester autant de bouts de code que l’on souhaite, en appelant m\u00eame quelques framework bien connus […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","hide_page_title":"","footnotes":""},"categories":[13,81,33],"tags":[24,164,158],"class_list":["post-709","post","type-post","status-publish","format-standard","hentry","category-niveau-intermediaire","category-performance","category-programmation","tag-javascript","tag-performance","tag-programmation"],"_links":{"self":[{"href":"https:\/\/blog.kodono.info\/wordpress\/wp-json\/wp\/v2\/posts\/709","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.kodono.info\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.kodono.info\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.kodono.info\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.kodono.info\/wordpress\/wp-json\/wp\/v2\/comments?post=709"}],"version-history":[{"count":5,"href":"https:\/\/blog.kodono.info\/wordpress\/wp-json\/wp\/v2\/posts\/709\/revisions"}],"predecessor-version":[{"id":715,"href":"https:\/\/blog.kodono.info\/wordpress\/wp-json\/wp\/v2\/posts\/709\/revisions\/715"}],"wp:attachment":[{"href":"https:\/\/blog.kodono.info\/wordpress\/wp-json\/wp\/v2\/media?parent=709"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.kodono.info\/wordpress\/wp-json\/wp\/v2\/categories?post=709"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.kodono.info\/wordpress\/wp-json\/wp\/v2\/tags?post=709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}