{"ScriptPreparationCode":"window.startswith = \u0027![]\u0027;\r\nvar data = window.data = [];\r\nconst possible = \u0022ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\u0022;\r\nvar TOTAL_STRINGS = window.TOTAL_STRINGS = 100000;\r\n\r\nfunction getRandomInt(max) {\r\n return Math.floor(Math.random() * max);\r\n}\r\n\r\nfunction makeRandomString(len) {\r\n var text = \u0022![]\u0022;\r\n for( var i=0; i \u003C len; i\u002B\u002B ) {\r\n text \u002B= possible.charAt(getRandomInt(possible.length));\r\n }\r\n return text;\r\n}\r\n\r\nwhile (data.length \u003C TOTAL_STRINGS) {\r\n data.push(makeRandomString(getRandomInt(20)));\r\n}","TestCases":[{"Name":"startsWith","Code":"var x = 0;\r\nvar TOTAL_STRINGS = window.TOTAL_STRINGS;\r\nvar data = window.data;\r\nvar match = window.match;\r\nwhile (x \u003C TOTAL_STRINGS) {\r\n const str = data[x];\r\n str.startsWith(match) === true;\r\n x \u002B= 1;\r\n}","IsDeferred":false},{"Name":"substr","Code":"var x = 0;\r\nvar TOTAL_STRINGS = window.TOTAL_STRINGS;\r\nvar data = window.data;\r\nvar match = window.match;\r\nwhile (x \u003C TOTAL_STRINGS) {\r\n const str = data[x];\r\n str.substr(0, match) === \u0027![]\u0027;\r\n x \u002B= 1;\r\n}","IsDeferred":false}]}