js date 转 string

<script>    // inputstr= date格式 Wed Mar 22 13:38:37 CST 2017 , showsplit = 以'-'分隔 , showweek =是否显示周 true 显示 false 不显示                                    var inputstr = "${finance.extend1}" + ""; //末尾加一个空格                                     var showsplit = "-";                                    var showweek = false;                                    var date = "";                                    var month = new Array();                                    var week = new Array();                                    month["Jan"] = 1;                                    month["Feb"] = 2;                                    month["Mar"] = 3;                                    month["Apr"] = 4;                                    month["May"] = 5;                                    month["Jan"] = 6;                                    month["Jul"] = 7;                                    month["Aug"] = 8;                                    month["Sep"] = 9;                                    month["Oct"] = 10;                                    month["Nov"] = 11;                                    month["Dec"] = 12;                                    week["Mon"] = "一";                                    week["Tue"] = "二";                                    week["Wed"] = "三";                                    week["Thu"] = "四";                                    week["Fri"] = "五";                                    week["Sat"] = "六";                                    week["Sun"] = "日";                                    str = inputstr.split(" ");                                    date = str[5];                                    date += showsplit + month[str[1]]                                            + showsplit + str[2];                                    if (showweek) {                                        date += "    " + " 星期" + week[str[0]];                                    }                                    document.write(date);                                </script>