如何在 javascript 中自动选择当前日期？我正在使用 Calendar .js 显示日历，但不知道如何自动选择当前日期。请指导我
编辑：Calender.js
var oldLink = null;
// code to change the active stylesheet
function setActiveStyleSheet(link, title) {
var i, a, main;
for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
a.disabled = true;
if(a.getAttribute("title") == title) a.disabled = false;
}
}
if (oldLink) oldLink.style.fontWeight = 'normal';
oldLink = link;
link.style.fontWeight = 'bold';
return false;
}
// This function gets called when the end-user clicks on some date.
function selected(cal, date) {
cal.sel.value = date;
cal.sel.focus();
// just update the date in the input field.
// if ((cal.sel.id).substr(0,3) == "row" || cal.sel.id == "row3")
cal.callCloseHandler();
}
function closeHandler(cal) {
cal.hide(); // hide the calendar
}
function showCalendar(id, format) {
var el = document.getElementById(id);
if (calendar != null) {
// we already have some calendar created
calendar.hide();
// so we hide it first.
} else {
// first-time call, create the calendar.
var cal = new Calendar(false, null, selected, closeHandler);
// uncomment the following line to hide the week numbers
// cal.weekNumbers = false;
calendar = cal; // remember it in the global var
cal.setRange(1900, 2070); // min/max year allowed.
cal.create();
}
calendar.setDateFormat(format); // set the specified date format
calendar.parseDate(el.value); // try to parse the text in field
calendar.sel = el; // inform it what input field we use
calendar.showAtElement(el); // show the calendar below it
return false;
}
var MINUTE = 60 * 1000;
var HOUR = 60 * MINUTE;
var DAY = 24 * HOUR;
var WEEK = 7 * DAY;
function isDisabled(date) {
var today = new Date();
return (Math.abs(date.getTime() - today.getTime()) / DAY) > 10;
}
function flatSelected(cal, date) {
var el = document.getElementById("preview");
el.innerHTML = date;
}
function showFlatCalendar() {
var parent = document.getElementById("display");
// construct a calendar giving only the "selected" handler.
var cal = new Calendar(false, null, flatSelected);
// hide week numbers
cal.weekNumbers = false;
// We want some dates to be disabled; see function isDisabled above
cal.setDisabledHandler(isDisabled);
cal.setDateFormat("DD, M d");
cal.create(parent);
cal.show();
}
function compareDate(date1, date2)
{
var strErrMsg = "";
tokens = date1.split("-");
dd = tokens[0];
mm = tokens[1];
mm=mm-1;
yyyy = tokens[2];
dt1 = new Date(yyyy,mm,dd);
tokens1 = date2.split("-");
dd = tokens1[0];
mm = tokens1[1];
mm=mm-1;
yyyy = tokens1[2];
dt2 = new Date(yyyy,mm,dd);
if(dt1.valueOf() <= dt2.valueOf())
alert(dt1);
alert(dt2);
var difInDays = (parseInt) ((dt2.getTime() - dt1.getTime())/(1000*60*60*24));
alert(difInDays);
if(dt1.valueOf() <= dt2.valueOf())
{
return strErrMsg;
}
else
{
strErrMsg = "Cannot be Greater than ";
return strErrMsg;
}
return strErrMsg;
}
function nextDateAfterThreeDays(date1)
{
tokens = date1.split("-");
dd = tokens[0];
mm = parseInt(tokens[1]-1);
yyyy = tokens[2];
dt1 = new Date(yyyy,mm,dd);
var time=dt1.getTime();
time=time;
dt1.setTime(time);
var newDD = dt1.getDate()+3;
var newMM = dt1.getMonth()+1;
var newYY = dt1.getFullYear();
if(newDD<10)
newDD="0"+newDD;
if(newMM<10)
newMM="0"+newMM;
date1=newDD+"-"+newMM+"-"+dt1.getFullYear();
return date1;
}
function compareBackDate(date1, date2)
{
var strErrMsg = "";
tokens = date1.split("-");
dd = tokens[0];
mm = parseInt(tokens[1])-1;
yyyy = tokens[2];
dt1 = new Date(yyyy,mm,dd);
tokens = date2.split("-");
dd = tokens[0];
mm = parseInt(tokens[1])-1;
yyyy = tokens[2];
dt2 = new Date(yyyy,mm,dd);
var difInDays = (parseInt) ((dt1.getTime() - dt2.getTime())/(1000*60*60*24));
alert(""+difInDays);
if(difInDays > 15 )
{
strErrMsg = " Should not be earlier six month than ";
}
return strErrMsg;
}
function convertDate(date1)
{
var tokens1;
var ddd;
var mmm="";
var mmm1;
var yyyyy;
var strErrMsg="";
tokens1 = date1.split("-");
ddd = tokens1[0];
mmm = tokens1[1];
yyyyy = tokens1[2];
if(mmm=="Jan")
{
mmm1=01;
}
if(mmm=="Feb")
{
mmm1=02;
}
if(mmm=="Mar")
{
mmm1=03;
}
if(mmm=="Apr")
{
mmm1=04;
}
if(mmm=="May")
{
mmm1=05;
}
if(mmm=="Jun")
{
mmm1=06;
}
if(mmm=="Jul")
{
mmm1=07;
}
if(mmm=="Aug")
{
mmm1=08;
}
if(mmm=="Sep")
{
mmm1=09;
}
if(mmm=="Oct")
{
mmm1=10;
}
if(mmm=="Nov")
{
mmm1=11;
}
if(mmm=="Dec")
{
mmm1=12;
}
strErrMsg=ddd+"-"+mmm1+"-"+yyyyy;
return strErrMsg;
}
function isComboSelected(objComboName)
{
var strErrMsg = "";
var objForm = document.getElementsByTagName("form")[0];
var objCombo = document.getElementsByName(objComboName)[0];
if(objCombo.options[0].selected == true)
{
strErrMsg = "Please Select Value.";
return strErrMsg;
}
return strErrMsg;
}
编辑2：
我的代码
<script type="text/javascript">
function submitFun()
{
var frm=document.forms[0];
var fromDate=frm.lsReqRecDate.value;
//var toDate=frm.toDate.value;
var date1=convertDate(fromDate);
//var date2=convertDate(toDate);
var mm;var dd;var yyyy;
var mm1;var dd1;var yyyy1;
var d1=date1;
var txtAppFrmDate=date1;
if(d1.indexOf("-")!=-1)
{
dd=d1.substring(0,d1.indexOf("-"));
mm=d1.substring(d1.indexOf("-")+1,d1.lastIndexOf("-"));
yyyy=d1.substring(d1.lastIndexOf("-")+1,d1.length);
}
start_Date=new Date(yyyy,mm-1,dd);
var fDate = txtAppFrmDate.split("-");
// var tDate = txtAppToDate.split("-");
var one_day=1000*60*60*24;
var fdt = new Date((fDate[2]),(fDate[1]-1),(fDate[0]));
frm.submit();
}
</script>
<html:form action="/exceptionNBReport.do" styleId="frmDatewise">
<TABLE class="ReportFilter">
<THEAD>
<TR>
<TD colspan="2">NB Report Search</TD>
</TR>
</THEAD>
</TABLE>
<br><br>
<TABLE class="ReportFilter">
<TR>
<TD class="lbl" align="left">Last requirement received date</TD>
<TD>
<html:text property="lsReqRecDate" style="width:170;" readonly="readonly"/>
<input type="reset" value="..." onclick="return showCalendar('lsReqRecDate','dd-MM-y');" name="reset"/>
</TD>
</TR>
<TR>
<TD colspan="2" align="center">
<html:button property="search" value="Submit" onclick="submitFun()"/>
</TD>
</TR>
</TABLE>
</html:form>