dourunlao1642 2013-02-08 14:17
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php文本字段将数字转换为小数

l need help to finish my php project. l will like to have a text fields V1,V2,V3 and result/output to accept only decimal numbers (4 decimal place ie 0.0000) or automatically turns numbers to four decimal pace and have a read-only field generate the total sum of the 3 text fields without reloading the form.

eg text field v1+text field v2+text field v3=text field result

the text field should accept on four decimal numbers or automatically turn numbers to four decimal place.

I am using the following sum function;

function sum() 
{
    var TotalLBCReceipts = num("TotalLBCReceipts");
    var TotalKaaseReceipts = num("TotalKaaseReceipts");
    var TakoradiToFactory = num("TakoradiToFactory2");
    var KaaseToFactory = num("KaaseToFactory2");
    var SampleResidue = num("SampleResidue");
    var Sweepings  = num("Sweepings");
    var OrganicCocoa = num("OrganicCocoa2");
    var Confiscated = num("Confiscated");
    var Cuttings = num("Cuttings");
    var r = document.getElementById("GRANDTOTAL1");

    if (r != null) 
    {
         r.value = TotalLBCReceipts + 
                   TotalKaaseReceipts + 
                   TakoradiToFactory +
                   KaaseToFactory +
                   SampleResidue +
                   Sweepings +
                   OrganicCocoa +
                   Confiscated+Cuttings;
     }
}

And grabbing the Values using;

function num(id) 
{
    var e = document.getElementById(id);

    if (e != null) 
    {
        var v = e.value;
        if (/^\d+$/.test(v)) 
        {
            return parseInt(v, 10);
        }
    }

return 0;

}

thanks.

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1条回答 默认 最新

  • dongxu3029 2013-02-08 14:25
    关注

    Google is your friend... As is StackOverflow!!

    You need to use JavaScript here, perhaps as well as PHP...

    Restrict to Numbers with decimal place:

    Restricting input to textbox: allowing only numbers and decimal point

    <HTML>
  <HEAD>
    <SCRIPT language=Javascript>
       <!--
       function isNumberKey(evt)
       {
          var charCode = (evt.which) ? evt.which : event.keyCode;
          if (charCode != 46 && charCode > 31 
            && (charCode < 48 || charCode > 57))
             return false;

          return true;
       }
       //-->
    </SCRIPT>
  </HEAD>
  <BODY>
    <INPUT id="txtChar" onkeypress="return isNumberKey(event)" 
           type="text" name="txtChar">
  </BODY>
</HTML>

    Sum Numbers with readonly field:

    adding the text box values and display it using javascript

    <form name="myFormName">
    <p><input type="text" name="myInputName1" value="25.3"></p>
    <p><input type="text" name="myInputName2" value="14.2"></p>
</form>
<div id="total"></div>

<script type="text/javascript>

    var total = parseFloat(0, 10);

    total += parseFloat(document.myFormName.myInputName1.value, 10);
    total += parseFloat(document.myFormName.myInputName2.value, 10);

    document.getElementById("total").innerHTML = "Total is " + total;

</script>

    Round to 4 Decimal Places;:

    https://stackoverflow.com/a/7269919/1305169

    Math.round(val*10000)/10000

    Hope this helps!

    EDIT:

    You need to change your Code to the following;

    Your sum Function:

    function sum() 
{
    var TotalLBCReceipts = num("TotalLBCReceipts");
    var TotalKaaseReceipts = num("TotalKaaseReceipts");
    var TakoradiToFactory = num("TakoradiToFactory2");
    var KaaseToFactory = num("KaaseToFactory2");
    var SampleResidue = num("SampleResidue");
    var Sweepings  = num("Sweepings");
    var OrganicCocoa = num("OrganicCocoa2");
    var Confiscated = num("Confiscated");
    var Cuttings = num("Cuttings");
    var r = document.getElementById("GRANDTOTAL1");

    if (r != null) 
    {
         r.value = Math.round((
                       TotalLBCReceipts + 
                       TotalKaaseReceipts + 
                       TakoradiToFactory +
                       KaaseToFactory +
                       SampleResidue +
                       Sweepings +
                       OrganicCocoa +
                       Confiscated +
                       Cuttings) * 10000) / 10000;
     }
}

    And your num function:

    function num(id) 
{
    var e = document.getElementById(id);

    if (e != null) 
    {
        return Math.round(e.value*10000)/10000;
    }

    return 0;
}

    You can probably just return the plain number from the num Function, however I show it here for completeness!

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

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