Calculer combien de jours entre 2 champ input

Bonjour

Mon probleme est comme suis : Je dois savoir combien de jour, a l'aide d'un calendrier, sépare entre 2 champ input. Les dates sont formater 19-08-2008. Mais mon probleme est quand je change de mois. Ex 19-08-2008 et 1-09-2008 va me calculer -18 alors qui a seulment 13 jours.

voici mon code pour le calcul

Code:

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<script type="text/javascript">
function calcul()
{ 
document.getElementById("c").value=
parseFloat( document.getElementById("date2").value)-
parseFloat( document.getElementById("date1").value); }
</script>

Je selectionne mes dates avec un script qui me fait un seul calendrier pour les 2 champ input. voici mon script

Code:

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    <table class="ds_box" cellpadding="0" cellspacing="0" id="ds_conclass" style="display: none;">
      <tr>
        <td id="ds_calclass"></td>
      </tr>
    </table>
    <script type="text/javascript">
// <!-- <![CDATA[
 
// Project: Dynamic Date Selector (DtTvB) - 2006-03-16
// Script featured on JavaScript Kit- http://www.javascriptkit.com
// Code begin...
// Set the initial date.
var ds_i_date = new Date();
ds_c_month = ds_i_date.getMonth() + 1;
ds_c_year = ds_i_date.getFullYear();
 
// Get Element By Id
function ds_getel(id) {
    return document.getElementById(id);
}
 
 
 
// Output Element
var ds_oe = ds_getel('ds_calclass');
// Container
var ds_ce = ds_getel('ds_conclass');
 
// Output Buffering
var ds_ob = ''; 
function ds_ob_clean() {
    ds_ob = '';
}
function ds_ob_flush() {
    ds_oe.innerHTML = ds_ob;
    ds_ob_clean();
}
function ds_echo(t) {
    ds_ob += t;
}
 
var ds_element; // Text Element...
 
var ds_monthnames = [
'Janvier', 'Février', 'Mars', 'Avril', 'Mai', 'Juin',
'Juillet', 'Aout', 'Septembre', 'Octobre', 'Novembre', 'Décembre'
]; // You can translate it for your language.
 
var ds_daynames = [
'Di', 'Lu', 'Ma', 'Me', 'Je', 'Ve', 'Sa'
]; // You can translate it for your language.
 
// Calendar template
function ds_template_main_above(t) {
    return '<table cellpadding="1" cellspacing="1" class="ds_tbl">'
         + '<tr>'
         + '<td colspan="7">'
         + '<tr align="center">'
         + '<td width="25%" colspan="2" align="right" class="ds_head" style="cursor: pointer" onclick="ds_pm();"><strong>-</strong></td>'
         + '<td width="50%" colspan="3" align="justify" class="ds_head" style="cursor: pointer">' + t + '</td>'
         + '<td width="25%" colspan="2" align="left" class="ds_head" style="cursor: pointer" onclick="ds_nm();"><strong>+</strong></td>'
         + '</tr>'
         + '</td>'
         + '</tr>'
         + '<tr>';
}
 
function ds_template_day_row(t) {
    return '<td class="ds_subhead">' + t + '</td>';
    // Define width in CSS, XHTML 1.0 Strict doesn't have width property for it.
}
 
function ds_template_new_week() {
    return '</tr><tr>';
}
 
function ds_template_blank_cell(colspan) {
    return '<td colspan="' + colspan + '"></td>'
}
 
function ds_template_day(d, m, y) {
    return '<td class="ds_cell" onclick="ds_onclick(' + d + ',' + m + ',' + y + ')">' + d + '</td>';
    // Define width the day row.
}
 
function ds_template_main_below() {
    return '</tr>'
         + '<tr>'
         + '<td class="ds_head" style="cursor: pointer" onclick="ds_hi();" colspan="7">Fermer</td>'
         + '</tr>'
         + '</table>';
}
 
// This one draws calendar...
function ds_draw_calendar(m, y) {
    // First clean the output buffer.
    ds_ob_clean();
    // Here we go, do the header
    ds_echo (ds_template_main_above(ds_monthnames[m - 1] + ' ' + y));
    for (i = 0; i < 7; i ++) {
        ds_echo (ds_template_day_row(ds_daynames[i]));
    }
    // Make a date object.
    var ds_dc_date = new Date();
    ds_dc_date.setMonth(m - 1);
    ds_dc_date.setFullYear(y);
    ds_dc_date.setDate(1);
    if (m == 1 || m == 3 || m == 5 || m == 7 || m == 8 || m == 10 || m == 12) {
        days = 31;
    } else if (m == 4 || m == 6 || m == 9 || m == 11) {
        days = 30;
    } else {
        days = (y % 4 == 0) ? 29 : 28;
    }
    var first_day = ds_dc_date.getDay();
    var first_loop = 1;
    // Start the first week
    ds_echo (ds_template_new_week());
    // If sunday is not the first day of the month, make a blank cell...
    if (first_day != 0) {
        ds_echo (ds_template_blank_cell(first_day));
    }
    var j = first_day;
    for (i = 0; i < days; i ++) {
        // Today is sunday, make a new week.
        // If this sunday is the first day of the month,
        // we've made a new row for you already.
        if (j == 0 && !first_loop) {
            // New week!!
            ds_echo (ds_template_new_week());
        }
        // Make a row of that day!
        ds_echo (ds_template_day(i + 1, m, y));
        // This is not first loop anymore...
        first_loop = 0;
        // What is the next day?
        j ++;
        j %= 7;
    }
    // Do the footer
    ds_echo (ds_template_main_below());
    // And let's display..
    ds_ob_flush();
    // Scroll it into view.
    ds_ce.scrollIntoView();
}
 
// A function to show the calendar.
// When user click on the date, it will set the content of t.
function ds_sh(t) {
    // Set the element to set...
    ds_element = t;
    // Make a new date, and set the current month and year.
    var ds_sh_date = new Date();
    ds_c_month = ds_sh_date.getMonth() + 1;
    ds_c_year = ds_sh_date.getFullYear();
    // Draw the calendar
    ds_draw_calendar(ds_c_month, ds_c_year);
    // To change the position properly, we must show it first.
    ds_ce.style.display = '';
    // Move the calendar container!
    the_left = ds_getleft(t);
    the_top = ds_gettop(t) + t.offsetHeight;
    ds_ce.style.left = the_left + 'px';
    ds_ce.style.top = the_top + 'px';
    // Scroll it into view.
    ds_ce.scrollIntoView();
}
 
// Hide the calendar.
function ds_hi() {
    ds_ce.style.display = 'none';
}
 
// Moves to the next month...
function ds_nm() {
    // Increase the current month.
    ds_c_month ++;
    // We have passed December, let's go to the next year.
    // Increase the current year, and set the current month to January.
    if (ds_c_month > 12) {
        ds_c_month = 1; 
        ds_c_year++;
    }
    // Redraw the calendar.
    ds_draw_calendar(ds_c_month, ds_c_year);
}
 
// Moves to the previous month...
function ds_pm() {
    ds_c_month = ds_c_month - 1; // Can't use dash-dash here, it will make the page invalid.
    // We have passed January, let's go back to the previous year.
    // Decrease the current year, and set the current month to December.
    if (ds_c_month < 1) {
        ds_c_month = 12; 
        ds_c_year = ds_c_year - 1; // Can't use dash-dash here, it will make the page invalid.
    }
    // Redraw the calendar.
    ds_draw_calendar(ds_c_month, ds_c_year);
}
 
// Moves to the next year...
function ds_ny() {
    // Increase the current year.
    ds_c_year++;
    // Redraw the calendar.
    ds_draw_calendar(ds_c_month, ds_c_year);
}
 
// Moves to the previous year...
function ds_py() {
    // Decrease the current year.
    ds_c_year = ds_c_year - 1; // Can't use dash-dash here, it will make the page invalid.
    // Redraw the calendar.
    ds_draw_calendar(ds_c_month, ds_c_year);
}
 
// Format the date to output.
function ds_format_date(d, m, y) {
    // 2 digits month.
    m2 = '00' + m;
    m2 = m2.substr(m2.length - 2);
    // 2 digits day.
    d2 = '00' + d;
    d2 = d2.substr(d2.length - 2);
    // YYYY-MM-DD
//    return y + '-' + m2 + '-' + d2;
    return d2 + '-' + m2 + '-' + y;
}
 
// When the user clicks the day.
function ds_onclick(d, m, y) {
    // Hide the calendar.
    ds_hi();
    // Set the value of it, if we can.
    if (typeof(ds_element.value) != 'undefined') {
        ds_element.value = ds_format_date(d, m, y);
    // Maybe we want to set the HTML in it.
    } else if (typeof(ds_element.innerHTML) != 'undefined') {
        ds_element.innerHTML = ds_format_date(d, m, y);
    // I don't know how should we display it, just alert it to user.
    } else {
        alert (ds_format_date(d, m, y));
    }
}
 
// And here is the end.
 
// ]]> -->
</script>

Code:

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        <tr>
          <td>Date d'arrivée :</td>
          <td><label><input onclick="ds_sh(this);" name="date1" readonly="readonly" id="date1" style="cursor: text" /> 
            <img src="/images/calendrier.png" width="20" height="21"></label></td>
        </tr>
        <tr>
          <td>Date de départ :</td>
          <td><label><input onclick="ds_sh(this);" name="date2" readonly="readonly" id="date2" style="cursor: text" /> <img src="/images/calendrier.png" alt="" width="20" height="21"></label></td>
        </tr>
 
      <tr><td><input type="text" name="c" id="c"> </td><td>
 
<input type=button onclick="calcul();" value="+"></td>
      </tr>

merci de votre aide

Bonjour,

Un code à adapter :

Code:

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<html>
  <head>
    <script type="text/javascript">
      function mefDate(laDate)
      {
        elements = laDate.split('-');
        return Date.UTC(elements[2], elements[1] - 1, elements[0]);
      }
 
      function calcul(formulaire)
      {
        var dateDeb = mefDate(formulaire.debut.value);
        var dateFin = mefDate(formulaire.fin.value);
        var dif = (dateFin -dateDeb) / 86400000;
        document.getElementById('ecart').innerHTML = '<b>Il y a ' + dif + ' jour(s) d\'écart.</b>';
        return false;
      }
    </script>
  </head>
  <body>
    <form name="test" method="post" action="" onsubmit="return calcul(this);">
      Date début&nbsp;<input type="text" name="debut" value="" />
      <br>
      Date fin&nbsp;<input type="text" name="fin" value="" />
      <br>
      <input type="submit" name="btn" value="valider" />
    </form>
    <br>
    <div id="ecart"></div>
  </body>
</html>

Bravo

ca fonctionne. Mais comment on fait pour declancher la fonction quand les 2 champs sont rempli aulieu de faire un bouton et que le nombre ne puisse etre négatif

Code:

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<script type="text/javascript">
      function mefDate(laDate)
      {
        elements = laDate.split('-');
        return Date.UTC(elements[2], elements[1] - 1, elements[0]);
      }
 
      function calcul(form1)
      {
        var dateDeb = mefDate(document.getElementById('date1').value);
        var dateFin = mefDate(document.getElementById('date2').value);
        var dif = (dateFin -dateDeb) / 86400000;
        document.getElementById('ecart').innerHTML = '<b>Il y a ' + dif + ' jour(s) d\'écart.</b>';
        return false;
      }
    </script>

WOW je crois que je commence en comprendre le javacript, il etais temps

voici le code

Code:

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<script type="text/javascript">
      function mefDate(laDate)
      {
        elements = laDate.split('-');
        return Date.UTC(elements[2], elements[1] - 1, elements[0]);
      }
 
      function calcul(form1){
      if (document.getElementById('date1').value!= '' && document.getElementById('date2').value!='')
      {
        var dateDeb = mefDate(document.getElementById('date1').value);
        var dateFin = mefDate(document.getElementById('date2').value);
        var dif = (dateFin -dateDeb) / 86400000;
        document.getElementById('ecart').innerHTML = dif ;
        return false;
      }}
    </script>

et il faut rajouté un evenement onclick sur le tableau de la date

Code:

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function ds_template_day(d, m, y) {
    return '<td class="ds_cell" onclick="ds_onclick(' + d + ',' + m + ',' + y + '); return calcul(this)"">' + d + '</td>';
    // Define width the day row.
}

merci