Editing Reverse string This edit will create a new revision. Your details (optional) Name Email (won’t be displayed; might be used for Gravatar) URL Test case details Title * Published (uncheck if you want to fiddle around before making the page public) Description (in case you feel further explanation is needed)(Markdown syntax is allowed) Are you a spammer? (just answer the question) Preparation code Preparation code HTML (this will be inserted in the <body> of a valid HTML5 document in standards mode) (useful when testing DOM operations or including libraries) <script> var str = 'abcdefghijklmnopqrstuvwxyz'; function str_reverse1(str) { return str.split('').reverse().join(''); } function str_reverse2(str) { var result = '', length = str.length; while (length--) { result += str[length]; } return result; } function str_reverse3(str) { var result = [], length = str.length, pad = length; while (length--) { result[pad - length] = str[length]; } return result.join(''); } function str_reverse4(str) { var curr, result = str.split(''); for (var i = 0, j = result.length - 1; i < j; i++, j--) { curr = result[i]; result[i] = result[j]; result[j] = curr; } return result.join(''); } </script> Include JavaScript libraries as follows: <script src="//cdn.ext/library.js"></script> Define setup for all tests (variables, functions, arrays or other objects that will be used in the tests) (runs before each clocked test loop, outside of the timed code region) (e.g. define local test variables, reset global variables, clear canvas, etc.) (see FAQ) Define teardown for all tests (runs after each clocked test loop, outside of the timed code region) (see FAQ) Code snippets to compare Test 1 Title Async (check if this is an asynchronous test) Code str_reverse1(str); Test 2 Title Async (check if this is an asynchronous test) Code str_reverse2(str); Test 3 Title Async (check if this is an asynchronous test) Code str_reverse3(str); Test 4 Title Async (check if this is an asynchronous test) Code str_reverse4(str);