JavaScript start and end time comparisons

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Determines whether the start time is less than the end time if ($ ("#txtBeginTime"). Length > 0 && $ ("#txtEndTime"). Length > 0) { if (Date.parse (Timeformattosql ("#txtBeginTime"). Val ()). Replace ("-", "/")) > Date.parse (Timeformattosql ($ ("# Txtendtime "). Val ()). Replace ("-","/")) { Alert ("Start time cannot be greater than end time!"); $ ("#txtBeginSearchTimeByBE"). focus (); Return <summary>///converts the passed time value to the SQL-recognized time format <param name= "Strtime" > Time (Normal page display time format) </param> </summary> function Timeformattosql (strtime) { var strresult = ""; var strtemp = ""; for (var i = 0; i < strtime.length; i++) { strtemp = Strtime.substr (i, 1); if (strtemp = = "Year" | | strtemp = = "Month") Strresult + = "-"; Else if (strtemp = "Day" | | strtemp = = "Seconds") { if (strtemp = = "Day") Strresult + = "|"; Else Strresult + = ""; } Else if (strtemp = "Time" | | strtemp = = "Min") Strresult + = ":"; Else Strresult + = strtemp; } var strargdatetime = strresult.split (' | '); This time format may be 2010-11-11 11: or 2010-11-11 11 format if (strargdatetime.length = = 1) { Date part to process var strargdate = strargdatetime[0].split ('-'); The time part is processed at this point, possibly in 11:11 or 11:00 format if (strargdate.length = = 2) { if (Strargdate[1].length < 1) strresult = strargdate[0]; Else strresult = strargdatetime[0] + "-01"; } else if (strargdate.length = = 3) { if (Strargdate[2].length < 1) strresult = strargdate[0] + "-" + strargdate[1] + "-01"; } } Else if (strargdatetime.length = = 2) { Time part to process var strargtime = strargdatetime[1].split (': '); The time part is processed at this point, possibly in 11:11 or 11:00 format if (strargtime.length = = 1) { strresult = strargdatetime[0] + "" + strargdatetime[1] + ": 00:00" } else if (strargtime.length = = 2) { if (Strargtime[1].length < 1) strresult = strargdatetime[0] + "" + strargdatetime[1] + "00" Else strresult = strargdatetime[0] + "" + strargdatetime[1] + ": 00" } else if (strargtime.length = = 3) { if (Strargtime[2].length < 1) strresult = strargdatetime[0] + "" + strargdatetime[1] + "00" } } return strresult; }