{"ScriptPreparationCode":"const root = document.createElement(\u0027div\u0027);\r\ndocument.body.appendChild(root);\r\n\r\nfor (let i = 0; i \u003C 3000; i\u002B\u002B) {\r\n const el = document.createElement(\u0027div\u0027);\r\n el.className = \u0027item\u0027;\r\n root.appendChild(el);\r\n}","TestCases":[{"Name":"classList.toggle","Code":"const items = document.querySelectorAll(\u0027.item\u0027);\r\n\r\nfor (let i = 0; i \u003C items.length; i\u002B\u002B) {\r\n items[i].classList.toggle(\u0027blue\u0027);\r\n}","IsDeferred":false},{"Name":"className","Code":"const items = document.querySelectorAll(\u0027.item\u0027);\r\n\r\nfor (let i = 0; i \u003C items.length; i\u002B\u002B) {\r\n items[i].className = \u0027item blue\u0027;\r\n}","IsDeferred":false},{"Name":"style.background","Code":"const items = document.querySelectorAll(\u0027.item\u0027);\r\n\r\nfor (let i = 0; i \u003C items.length; i\u002B\u002B) {\r\n items[i].style.background = \u0027blue\u0027;\r\n}","IsDeferred":false},{"Name":"property","Code":"const items = document.querySelectorAll(\u0027.item\u0027);\r\n\r\nfor (let i = 0; i \u003C items.length; i\u002B\u002B) {\r\n items[i].style.setProperty(\u0027--color\u0027, \u0027blue\u0027);\r\n}","IsDeferred":false}]}