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Thread: Tag select, input - onchange

  1. #1
    Join Date
    Aug 2010
    Posts
    2

    Tag select, input - onchange

    Hello,

    I would like to use javascript to four html tags "select". Two tags are a couple. So, I have two couple of tag "select".

    I want to count each couple of tag "select". I dont know how exactly to explain it . I hope that my code help you to understand.

    When I select all 4 " tags select" I will see two numbers in "tag input"

    PHP Code:
    $max 8;   // eg
    echo "<form action='' method='post' name='form1'>";

    echo 
    "<tr><td align='right'><select name='vys1_map1' class='textbox'>";
    for(
    $i=0$i<=$max$i++)
    echo
    "<option value='".$i."'>".$i."</option>";
    echo
    "</select></td>";

    echo 
    "<td align='left'><select name='vys2_map1' class='textbox'>";
    for(
    $i=0$i<=$max$i++)
    echo
    "<option value='".$i."'>".$i."</option>";
    echo
    "</select></td></tr>";

    echo 
    "<tr><td align='right'><select name='vys1_map2' class='textbox'>";
    for(
    $i=0$i<=$max$i++)
    echo
    "<option value='".$i."'>".$i."</option>";
    echo
    "</select></td>";

    echo 
    "<td align='left'><select name='vys2_map2' class='textbox'>";
    for(
    $i=0$i<=$max$i++)
    echo
    "<option value='".$i."'>".$i."</option>";
    echo
    "</select></td></tr>";

    $number1 $_POST['vys1_map1'] + $_POST['vys1_map2'];
    $number2 $_POST['vys2_map1'] + $_POST['vys2_map2'];

    echo 
    "<input type='text' name='vysledok1' value='$number1'>
    <input type='text' name='vysledok2' value='
    $number1'>

    </form>"


    Thanks for your time.

    PS: Sorry for my bad English

  2. #2
    Join Date
    May 2006
    Location
    Somewhere behind your screen
    Posts
    1,674
    PHP Code:
    <?php
    $output 
    '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <title>how to loop the chain select box</title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <style type="text/css">
    <!--
    div#main{text-align:center;padding-top:100px;}
    input{text-align:center;}
    -->
    </style>
    <script type="text/javascript">
    <!--
    function initForm(){
    var frm = document.forms["form1"];
    var m1_1 = frm.elements["vys1_map1"],
    m1_2 = frm.elements["vys1_map2"],
    m2_1 = frm.elements["vys2_map1"],
    m2_2 = frm.elements["vys2_map2"],
    inp_1 = frm.elements["vysledok1"],
    inp_2 = frm.elements["vysledok2"];
    m1_1.onchange = function(){inp_1.value = parseInt(this.value) + parseInt(m1_2.value);this.blur();}
    m1_2.onchange = function(){inp_1.value = parseInt(this.value) + parseInt(m1_1.value);this.blur();}
    m2_1.onchange = function(){inp_2.value = parseInt(this.value) + parseInt(m2_2.value);this.blur();}
    m2_2.onchange = function(){inp_2.value = parseInt(this.value) + parseInt(m2_1.value);this.blur();}
    }
    window.onload = initForm;
    //-->
    </script>
    </head>
    <body>
    <div id="main">
    '
    ;

    $max 8;   // eg 
    $output .= "<form action='' method='post' name='form1'>
    <table width='50%' align='center' border='0' id='datatable' cellspacing='3' cellpadding='3'>
    <tbody>"


    $output .= "<tr><td align='right'><select name='vys1_map1' class='textbox'>"
    for(
    $i=0$i<=$max$i++) 
    $output .="<option value='".$i."'>".$i."</option>"
    $output .="</select></td>"

    $output .= "<td align='left'><select name='vys2_map1' class='textbox'>"
    for(
    $i=0$i<=$max$i++) 
    $output .="<option value='".$i."'>".$i."</option>"
    $output .="</select></td></tr>"

    $output .= "<tr><td align='right'><select name='vys1_map2' class='textbox'>"
    for(
    $i=0$i<=$max$i++) 
    $output .="<option value='".$i."'>".$i."</option>"
    $output .="</select></td>"

    $output .= "<td align='left'><select name='vys2_map2' class='textbox'>"
    for(
    $i=0$i<=$max$i++) 
    $output .="<option value='".$i."'>".$i."</option>"
    $output .="</select></td></tr>"

    $number1 $_POST['vys1_map1'] + $_POST['vys1_map2']; 
    $number2 $_POST['vys2_map1'] + $_POST['vys2_map2']; 

    $output .= "<tr><td colspan='2'><input type='text' size='10' name='vysledok1' value='$number1' />
    <input type='text' size='10' name='vysledok2' value='
    $number1' /></td></tr>
    </tbody>
    </table>
    </form>
    </div>
    </body>
    </html>"
    ;

    echo 
    $output;
    ?>
    link to the example

  3. #3
    Join Date
    Aug 2010
    Posts
    2
    Thanks Padonak for your code,

    I don`t know writing javascrtips but I solved my problem yesterday. Here is code. Is it the correct ? Because it works.

    PHP Code:
    echo "<script language='JavaScript' >
    <!--
    function vypocet_prvy() {

    var h1 = document.form1.vys1_map1.value;
    var h2 = document.form1.vys1_map2.value;
                                
    var num1 = new Number(h1);
    var num2 = new Number(h2);                        
    var x = num1 + num2
                                
    document.form1.pokus1.value=x;
                                        
    }
                                
    function vypocet_druhy() {

    var h1 = document.form1.vys2_map1.value;
    var h2 = document.form1.vys2_map2.value;
                                
    var num1 = new Number(h1);
    var num2 = new Number(h2);
    var x = num1 + num2
                                
    document.form1.pokus2.value=x;
                                
    }
                                
    -->
    </script>"
    ;

    echo 
    "
    <form action='' method='post' name='form1'>
    <table align='center' cellspacing='0' cellpadding='6' border='0' width='70%'>
    echo "
    <tr>\n    
    <td>test</td>
    <
    td align=center>
    <
    strong>test1</strong>
    </
    td>
    <
    td align=center> <small><em>vs.</em></small> </td>
    <
    td align=center>
    <
    strong>test2</strong>
    </
    td>\n   
    </tr>
    <
    tr>
    <
    td>tessst</td>
    <
    td align=center colspan=3><span style='color: yellow'><b>test</b></span></td>
    </
    tr>
    <
    tr>
    <
    td><span style='color: yellow'>vysledok</span></td>";                        
    $max = 16;
    echo "
    <td align=right><select name='vys1_map1' class='textbox' onChange='vypocet_prvy()'>";
    for(
    $i=0; $i<=$max$i++)
    echo"
    <option value='".$i."'>".$i."</option>";
    echo"
    </select></td>";
                                    
    echo "
    <td align=center> : </td>
    <
    td align=left>
    <
    select name='vys2_map1' class='textbox' style=\"width:100\" onChange='vypocet_druhy()'>";
    for(
    $i=0$i<=$max$i++)
    echo
    "    <option>$i</option>";
    echo
    "</select>
    </td>\n   
    </tr>
    <tr>
    <tr>
    <td>tesssst</td>
    <td align=center colspan=3><span style='color: cyan'><b>test23</b></span></td>
    </tr>
    <tr>
    <td><span style='color: cyan'>Vysledok</span></td>
    <td align=right>
    <select name='vys1_map2' class='textbox' style=\"width:100\"  onChange='vypocet_prvy()'>"
    ;
        for(
    $i=0$i<=$max$i++)
    echo
    "    <option>$i</option>";
        echo
    "</select>
        </td>
    <td align=center> : </td>
    <td align=left>
        <select name='vys2_map2' class='textbox' style=\"width:100\" onChange='vypocet_druhy()'>"
    ;
        for(
    $i=0$i<=$max$i++)
        echo
    "    <option>$i</option>";
        echo
    "</select>
    </td>\n   
            </tr>
        <tr>
        <td colspan=4><b>&nbsp;</b></td>
        </tr>
        <tr>\n    
        <td>spolu</td>
        <td align=right>"
    ;
                                        
        echo 
    "        <input type='text' readonly=\"readonly\"  style=\"width: 40px\" class='textbox' name='pokus1'>
                                                
        </td>
        <td align=center><strong> : </strong></td>
            <td align=left>    
        <input type='text' readonly=\"readonly\" style=\"width: 40px\" class='textbox' name='pokus2'>
            </td>\n   
    </tr>
    <tr>
    <td colspan=4 align=center>
    <br>
    <input type='button' style='cursor: pointer;' class='button' name='no' value='Späť' onclick='history.go(-1)'>
    <input type='submit' name='subm' style='cursor: pointer;' class='button' value='Zapísať Výsledok'>
                    
                      </td>
                                    </tr>
                                
                            </table></form>"


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