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Thread: How to disable past date in Javascript Datepicker?

  1. #1
    Join Date
    Mar 2013
    Posts
    18

    How to disable past date in Javascript Datepicker?

    How do I make the below JS datepicker to disable past date? Everythnkg works fine except I want to have only future date selectable. Thanks.

    Code:
    function refreshDatePicker(dateFieldName, year, month, day)
    {
      // if no arguments are passed, use today's date; otherwise, month and year
      // are required (if a day is passed, it will be highlighted later)
      var thisDay = new Date();
     
      if ((month >= 0) && (year > 0)) {
        thisDay = new Date(year, month, 1);
      } else {
        day = thisDay.getDate();
        thisDay.setDate(1);
      }
     
      // the calendar drawn as a table
      var crlf = "\r\n";
      var TABLE = "<table colspan=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 TD_title = "<td colspan=5 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\";' ";    
      var xTD = "</td>" + crlf;
      var DIV_title = "<div class='dpTitleText'>";
      var DIV_selected = "<div class='dpDayHighlight'>";
      var xDIV = "</div>";
     
      var html = TABLE;
     
      // this is the title bar, which displays the month and the buttons to
      // go back to a previous month or forward to the next month
      html += TR_title;
      html += TD_buttons + getButtonCode(dateFieldName, thisDay, -1, "&laquo;") + xTD;
      html += TD_title + DIV_title + monthArrayLong[ thisDay.getMonth()] + "&nbsp;" + thisDay.getFullYear() + xDIV + xTD;
      html += TD_buttons + getButtonCode(dateFieldName, thisDay, 1, "&raquo;") + xTD;
      html += xTR;
     
      // this is the row that indicates which day of the week we're on
      html += TR_days;
      for(i = 0; i < dayArrayMed.length; i++)
        html += TD_days + dayArrayMed[i] + xTD;
      html += xTR;
     
      // start populating the table with days of the month
      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
          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='dpTodayButtonl' onClick='refreshDatePicker(\"" + dateFieldName + "\");'>this month</button>";
      html += "<button class='dpTodayButtonr' onClick='updateDateField(\"" + dateFieldName + "\");'>close</button>";
      html += xTD + xTR;
     
      // and finally, close the table
      html += xTABLE;
     
      document.getElementById(datePickerDivID).innerHTML = html;
      // add an "iFrame shim" to allow the datepicker to display above selection lists
      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>";
    }
    
    
    /**
    Convert a JavaScript Date object to a string, based on the dateFormat and dateSeparator
    variables at the beginning of this script library.
    */
    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();
      }
    }
    
    
    /**
    Convert a string to a JavaScript Date object.
    */
    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();
     
      // after the datepicker has closed, optionally run a user-defined function called
      // datePickerClosed, passing the field that was just updated as a parameter
      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) {
      }
     
    }

  2. #2
    Join Date
    Mar 2013
    Posts
    18
    I have accidently missed part of the script. Below is the whole script. thx.

    Code:
    var datePickerDivID = "datepicker";
    var iFrameDivID = "datepickeriframe";
    var dayArrayShort = new Array('S', 'M', 'T', 'W', 'T', 'F', 'S');
    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');
     
    // these variables define the date formatting we're expecting and outputting.
    var defaultDateSeparator = "/";        
    var defaultDateFormat = "mdy"    
    var dateSeparator = defaultDateSeparator;
    var dateFormat = defaultDateFormat;
    
    function displayDatePicker(dateFieldName, displayBelowThisObject, dtFormat, dtSep)
    {  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 colspan=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 TD_title = "<td colspan=5 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\";' ";    
      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, "&laquo;") + xTD;
      html += TD_title + DIV_title + monthArrayLong[ thisDay.getMonth()] + "&nbsp;" + thisDay.getFullYear() + xDIV + xTD;
      html += TD_buttons + getButtonCode(dateFieldName, thisDay, 1, "&raquo;") + xTD;
      html += xTR;
     
      html += TR_days;
      for(i = 0; i < dayArrayMed.length; i++)
        html += TD_days + dayArrayMed[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
          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='dpTodayButtonl' onClick='refreshDatePicker(\"" + dateFieldName + "\");'>this month</button>";
      html += "<button class='dpTodayButtonr' 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) {
      }
     
    }

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