{"ScriptPreparationCode":"var node = document.getElementById(\u0027container\u0027);\r\n\r\nfor(var i = 0; i \u003C 1000; i\u002B\u002B) node.appendChild(document.createElement(\u0027div\u0027));","TestCases":[{"Name":"removeChild ( firstChild )","Code":"var node = document.getElementById(\u0027container\u0027);\r\nlet item;\r\nwhile(item = node.firstChild) node.removeChild(item)","IsDeferred":false},{"Name":"removeChild ( lastChild )","Code":"var node = document.getElementById(\u0027container\u0027);\r\nwhile(node.firstChild) node.removeChild(node.lastChild)","IsDeferred":false},{"Name":"removeChild ( firstElementChild )","Code":"var node = document.getElementById(\u0027container\u0027);\r\nlet item;\r\nwhile(item = node.firstElementChild) node.removeChild(item)","IsDeferred":false},{"Name":"removeChild ( lastElementChild )","Code":"var node = document.getElementById(\u0027container\u0027);\r\nwhile(node.firstElementChild) node.removeChild(node.lastElementChild)","IsDeferred":false}]}