{"ScriptPreparationCode":"var parent = document.createElement(\u0022div\u0022);\r\nfor (let k = 0; k \u003C 100; k\u002B\u002B)\r\n parent.appendChild(document.createElement(\u0022div\u0022));\r\n\r\nvar child = parent.firstChild;\r\n","TestCases":[{"Name":"no removeChild","Code":"parent.appendChild(child);\r\nparent.insertBefore(child, parent.firstChild);","IsDeferred":false},{"Name":"removeChild","Code":"parent.removeChild(child);\r\nparent.appendChild(child);\r\nparent.removeChild(child);\r\nparent.insertBefore(child, parent.firstChild);","IsDeferred":false}]}