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Tuesday, 8 April 2014

Increment date by 10 days in javascript.

This applications to set a text box with a date (in dd-mm-yyyy format) 10 days ahead to start date(textfield) in javascript .


Here i placed start date value as default. When you click on start date text field , the end date will aromatically appended  with incremented date.

Note:  Once you download the js files named  datepicker.js and  datepicker.css files  then un-comment to the commented lines and  remove the default date value at start date.

Source Code:

save a file with testdate.jsp.

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
 <%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>

        <title>HR_Manager</title>
        <LINK href="datepicker.css" type="text/css" rel="stylesheet">
          <script type="text/javascript" src="style/js/jquery-1.6.4.min.js"></script>
        <script src="datepicker.js" type="text/javascript"></script>
        <script type="text/javascript">
    function getenddate(){
     var startdate=document.getElementById("startdate").value;
     var today = new Date();
   var myDate=new Date(startdate);
  myDate.setDate(myDate.getDate()+10);
  document.getElementById("enddate").value = myDate.getFullYear()+"-"+("0" + (myDate.getMonth()+1)).slice(-2)+"-"+("0" + (myDate.getDate())).slice(-2);
     }
   </script>
</head>
<body>
          <html:form action="/trainingallotment">
        <table align="left">

       <tr>
         <td>Start date:</td> <td><html:text property="startdate" styleId="startdate"  onfocus=" return getenddate();" value="2015-04-25"/>
         <a href='javascript:displayDatePicker("startdate",false,"ymd","-")'>
        <IMG src="images/cal.gif" width="18" height="14" border="0"/>
        </a> <td>
       
         </tr>
          <tr>
         <td>End date:</td><td> <html:text property="enddate" styleId="enddate" onchange="display()"/>
        <!--  <a href='javascript:displayDatePicker("enddate",false,"ymd","-")'>
        <IMG src="images/cal.gif" width="18" height="14" border="0"/>
        </a> --> </td>
         </tr>
        </table>
        </html:form>
  </body>
</html>
-----------------------  @@@@@---------------------

 save this file with  datepicker.js


var datePickerDivID = "datepicker";
var iFrameDivID = "datepickeriframe";

var dayArrayShort = new Array('Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa');
var dayArrayMed = new Array('Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat');
var dayArrayLong = new Array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday');
var monthArrayShort = new Array('Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec');
var monthArrayMed = new Array('Jan', 'Feb', 'Mar', 'Apr', 'May', 'June', 'July', 'Aug', 'Sept', 'Oct', 'Nov', 'Dec');
var monthArrayLong = new Array('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December');
var defaultDateSeparator = "/";        // common values would be "/" or "."
var defaultDateFormat = "mdy";   // valid values are "mdy", "dmy", and "ymd"
var dateSeparator = defaultDateSeparator;
var dateFormat = defaultDateFormat;

function displayDatePicker(dateFieldName, displayBelowThisObject, dtFormat, dtSep)
{
    //alert("1");
  var targetDateField = document.getElementsByName(dateFieldName).item(0);
  if ( !displayBelowThisObject )
    displayBelowThisObject = targetDateField;
   if (dtSep)
    dateSeparator = dtSep;
  else
    dateSeparator = defaultDateSeparator;
   if (dtFormat)
    dateFormat = dtFormat;
  else
    dateFormat = defaultDateFormat;

  var x = displayBelowThisObject.offsetLeft;
  var y = displayBelowThisObject.offsetTop + displayBelowThisObject.offsetHeight ;
   var parent = displayBelowThisObject;
  while (parent.offsetParent) {
    parent = parent.offsetParent;
    x += parent.offsetLeft;
    y += parent.offsetTop ;
  }
  drawDatePicker(targetDateField, x, y);
}

function drawDatePicker(targetDateField, x, y)
{
  var dt = getFieldDate(targetDateField.value );

  if (!document.getElementById(datePickerDivID)) {
    var newNode = document.createElement("div");
    newNode.setAttribute("id", datePickerDivID);
    newNode.setAttribute("class", "dpDiv");
    newNode.setAttribute("style", "visibility: hidden;");
    document.body.appendChild(newNode);
  }
  var pickerDiv = document.getElementById(datePickerDivID);
  pickerDiv.style.position = "absolute";
  pickerDiv.style.left = x + "px";
  pickerDiv.style.top = y + "px";
  pickerDiv.style.visibility = (pickerDiv.style.visibility == "visible" ? "hidden" : "visible");
  pickerDiv.style.display = (pickerDiv.style.display == "block" ? "none" : "block");
  pickerDiv.style.zIndex = 10000;

  refreshDatePicker(targetDateField.name, dt.getFullYear(), dt.getMonth(), dt.getDate());
}

function refreshDatePicker(dateFieldName, year, month, day)
{
   var thisDay = new Date();

  if ((month >= 0) && (year > 0)) {
    thisDay = new Date(year, month, 1);
  } else {
    day = thisDay.getDate();
    thisDay.setDate(1);
  }
  var crlf = "\r\n";
  var TABLE = "<table cols=7 class='dpTable'>" + crlf;
  var xTABLE = "</table>" + crlf;
  var TR = "<tr class='dpTR'>";
  var TR_title = "<tr class='dpTitleTR'>";
  var TR_days = "<tr class='dpDayTR'>";
  var TR_todaybutton = "<tr class='dpTodayButtonTR'>";
  var xTR = "</tr>" + crlf;
  var TD = "<td class='dpTD' onMouseOut='this.className=\"dpTD\";' onMouseOver=' this.className=\"dpTDHover\";' ";   
  var TDSun = "<td class='dpTDSun' onMouseOut='this.className=\"dpTDSun\";' onMouseOver=' this.className=\"dpTDHover\";' "; 
  var TD_title = "<td colspan=2 class='dpTitleTD'>";
  var TD_title2 = "<td class='dpTitleTD'>";
  var TD_buttons = "<td class='dpButtonTD'>";
  var TD_todaybutton = "<td colspan=7 class='dpTodayButtonTD'>";
  var TD_days = "<td class='dpDayTD'>";
  var TD_selected = "<td class='dpDayHighlightTD' onMouseOut='this.className=\"dpDayHighlightTD\";' onMouseOver='this.className=\"dpTDHover\";' ";    // leave this tag open, because we'll be adding an onClick event
  var xTD = "</td>" + crlf;
  var DIV_title = "<div class='dpTitleText'>";
  var DIV_selected = "<div class='dpDayHighlight'>";
  var xDIV = "</div>";
  var html = TABLE;
  html += TR_title;
  html += TD_buttons + getButtonCode(dateFieldName, thisDay, -1, "&lt;") + xTD;
  html += TD_title + DIV_title + monthArrayShort[ thisDay.getMonth()] + xDIV + xTD;
  html += TD_buttons + getButtonCode(dateFieldName, thisDay, 1, "&gt;") + xTD;
  html += TD_buttons + getButtonCode(dateFieldName, thisDay, -12, "&lt;") + xTD;
  html += TD_title2 + DIV_title + thisDay.getFullYear() + xDIV + xTD;
  html += TD_buttons + getButtonCode(dateFieldName, thisDay, 12, "&gt;") + xTD;
  html += xTR;
  html += TR_days;
  for(i = 0; i < dayArrayShort.length; i++)
    html += TD_days + dayArrayShort[i] + xTD;
  html += xTR;
  html += TR;
  for (i = 0; i < thisDay.getDay(); i++)
    html += TD + "&nbsp;" + xTD;
   do {
    dayNum = thisDay.getDate();
    TD_onclick = " onclick=\"updateDateField('" + dateFieldName + "', '" + getDateString(thisDay) + "');\">";
   
    if (dayNum == day)
      html += TD_selected + TD_onclick + DIV_selected + dayNum + xDIV + xTD;
    else if (thisDay.getDay() == 0)
      html += TDSun + TD_onclick + dayNum + xTD;   
    else
      html += TD + TD_onclick + dayNum + xTD;
        if (thisDay.getDay() == 6)
      html += xTR + TR;
    thisDay.setDate(thisDay.getDate() + 1);
  } while (thisDay.getDate() > 1)

  if (thisDay.getDay() > 0) {
    for (i = 6; i > thisDay.getDay(); i--)
      html += TD + "&nbsp;" + xTD;
  }
  html += xTR;
  var today = new Date();
  var todayString = "Today is " + dayArrayMed[today.getDay()] + ", " + monthArrayMed[ today.getMonth()] + " " + today.getDate();
  html += TR_todaybutton + TD_todaybutton;
  html += "<button class='dpTodayButton' onClick='refreshDatePicker(\"" + dateFieldName + "\");'>this month</button> ";
  html += "<button class='dpTodayButton' onClick='updateDateField(\"" + dateFieldName + "\");'>close</button>";
  html += xTD + xTR;
   html += xTABLE;

  document.getElementById(datePickerDivID).innerHTML = html;
  adjustiFrame();
}
function getButtonCode(dateFieldName, dateVal, adjust, label)
{
  var newMonth = (dateVal.getMonth () + adjust) % 12;
  var newYear = dateVal.getFullYear() + parseInt((dateVal.getMonth() + adjust) / 12);
  if (newMonth < 0) {
    newMonth += 12;
    newYear += -1;
  }

  return "<button class='dpButton' onClick='refreshDatePicker(\"" + dateFieldName + "\", " + newYear + ", " + newMonth + ");'>" + label + "</button>";
}

function getDateString(dateVal)
{
  var dayString = "00" + dateVal.getDate();
  var monthString = "00" + (dateVal.getMonth()+1);
  dayString = dayString.substring(dayString.length - 2);
  monthString = monthString.substring(monthString.length - 2);

  switch (dateFormat) {
    case "dmy" :
      return dayString + dateSeparator + monthString + dateSeparator + dateVal.getFullYear();
    case "ymd" :
      return dateVal.getFullYear() + dateSeparator + monthString + dateSeparator + dayString;
    case "mdy" :
    default :
      return monthString + dateSeparator + dayString + dateSeparator + dateVal.getFullYear();
  }
}

function getFieldDate(dateString)
{
  var dateVal;
  var dArray;
  var d, m, y;

  try {
    dArray = splitDateString(dateString);
    if (dArray) {
      switch (dateFormat) {
        case "dmy" :
          d = parseInt(dArray[0], 10);
          m = parseInt(dArray[1], 10) - 1;
          y = parseInt(dArray[2], 10);
          break;
        case "ymd" :
          d = parseInt(dArray[2], 10);
          m = parseInt(dArray[1], 10) - 1;
          y = parseInt(dArray[0], 10);
          break;
        case "mdy" :
        default :
          d = parseInt(dArray[1], 10);
          m = parseInt(dArray[0], 10) - 1;
          y = parseInt(dArray[2], 10);
          break;
      }
      dateVal = new Date(y, m, d);
    } else if (dateString) {
      dateVal = new Date(dateString);
    } else {
      dateVal = new Date();
    }
  } catch(e) {
    dateVal = new Date();
  }

  return dateVal;
}

function splitDateString(dateString)
{
  var dArray;
  if (dateString.indexOf("/") >= 0)
    dArray = dateString.split("/");
  else if (dateString.indexOf(".") >= 0)
    dArray = dateString.split(".");
  else if (dateString.indexOf("-") >= 0)
    dArray = dateString.split("-");
  else if (dateString.indexOf("\\") >= 0)
    dArray = dateString.split("\\");
  else
    dArray = false;

  return dArray;
}

function updateDateField(dateFieldName, dateString)
{
  var targetDateField = document.getElementsByName (dateFieldName).item(0);
  if (dateString)
    targetDateField.value = dateString;

  var pickerDiv = document.getElementById(datePickerDivID);
  pickerDiv.style.visibility = "hidden";
  pickerDiv.style.display = "none";

  adjustiFrame();
  targetDateField.focus();

  if ((dateString) && (typeof(datePickerClosed) == "function"))
    datePickerClosed(targetDateField);
}

function adjustiFrame(pickerDiv, iFrameDiv)
{
  var is_opera = (navigator.userAgent.toLowerCase().indexOf("opera") != -1);
  if (is_opera)
    return;
  try {
    if (!document.getElementById(iFrameDivID)) {
        var newNode = document.createElement("iFrame");
      newNode.setAttribute("id", iFrameDivID);
      newNode.setAttribute("src", "javascript:false;");
      newNode.setAttribute("scrolling", "no");
      newNode.setAttribute ("frameborder", "0");
      document.body.appendChild(newNode);
    }
     if (!pickerDiv)
      pickerDiv = document.getElementById(datePickerDivID);
    if (!iFrameDiv)
      iFrameDiv = document.getElementById(iFrameDivID);
      try {
      iFrameDiv.style.position = "absolute";
      iFrameDiv.style.width = pickerDiv.offsetWidth;
      iFrameDiv.style.height = pickerDiv.offsetHeight ;
      iFrameDiv.style.top = pickerDiv.style.top;
      iFrameDiv.style.left = pickerDiv.style.left;
      iFrameDiv.style.zIndex = pickerDiv.style.zIndex - 1;
      iFrameDiv.style.visibility = pickerDiv.style.visibility ;
      iFrameDiv.style.display = pickerDiv.style.display;
    } catch(e) {
    }
   } catch (ee) {
  }

}
-------------------------------@@@@@--------------------

Save this file with datepicker.css

body {
   
    font-size: .8em;
    }
.dpDiv {
    }
.dpTable {
   
    font-size: 12px;
    text-align: center;
    color: #03080C;
    background-color: #9DF8FF;
    border: 1px solid #AAAAAA;
    }
.dpTR {
    }
.dpTitleTR {
    }
.dpDayTR {
    }
.dpTodayButtonTR {
    }
.dpTD {
    border: 1px solid #9DF8FF;
    }

.dpTDSun {
    border: 1px solid #9DF8FF;
    color: red;
    font-weight: bold;
}
.dpDayHighlightTD {
    background-color: #CCCCCC;
    border: 1px solid #AAAAAA;
    }
.dpTDHover {
    background-color: #aca998;
    border: 1px solid #888888;
    cursor: pointer;
    color: red;
    }

.dpTitleTD {
    }

.dpButtonTD {
    }

.dpTodayButtonTD {
    }
.dpDayTD {
    background-color: #418AF3;
    border: 1px solid #AAAAAA;
    color: white;
    }
.dpTitleText {
    font-size: 12px;
    color: black;
    font-weight: bold;
    }
.dpDayHighlight {
    color: 4060ff;
    font-weight: bold;
    }
.dpButton {
   
    font-size: 10px;
    color: gray;
    background: #d8e8ff;
    font-weight: bold;
    padding: 0px;
    }
.dpTodayButton {
   
    font-size: 10px;
    color: gray;
    background: #d8e8ff;
    font-weight: bold;
    }

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