{"ScriptPreparationCode":null,"TestCases":[{"Name":"className =","Code":"var element = document.getElementById(\u0027foo\u0027);\r\nvar i = 1000;\r\nwhile (i--) {\r\n\r\n// vs using className\r\nelement.className = \u0027B\u0027;\r\n}","IsDeferred":false},{"Name":"classList","Code":"var element = document.getElementById(\u0027foo\u0027);\r\nvar i = 1000;\r\nwhile (i--) {\r\n// Using classList \r\nelement.classList.remove(\u0027A\u0027); \r\nelement.classList.add(\u0027B\u0027);\r\n\r\n}","IsDeferred":false}]}