need help in rounding off into two decimal places

[newphpcoder]

Hi..

I have javascript code with computation, but I have problem in my result because it was not round off or fixed into two decimal places only.

here is my code:

<script type="text/javascript">

function test_(cmpd) {
    var len_ = (document.frmMain.elements.length) - 1;
  
     for (i=0; i <= len_; i++ ) {   
    
       var strPos_ = document.frmMain.elements[i].id.indexOf(cmpd)
         
   
              if (strPos_ != -1) {
              var strPos = document.frmMain.elements[i].id.indexOf("_");
              
var strId = document.frmMain.elements[i].id.slice(strPos + 1) + "_" + document.frmMain.elements[i].id.slice(0,strPos)               
     // this is the computation that I need to fixed the result into two decimal places
    document.frmMain.elements[i].value = document.getElementById(strId).value * document.getElementById('mult').value;  
     } 
    }  
}
</script>

Thank you so much

[handcraftedweb]

A simple function like so will round n to 2 decimal places:

	
function rnd(n) {
    return Math.round(n * 100) / 100;
}

[newphpcoder]

I tried it, but on the first iitem it works correctly, but on the second Item it did not work the result from 10 * .92 = 9.2 but the result from my code is 920

<script type="text/javascript">

function test_(cmpd) {
    var len_ = (document.frmMain.elements.length) - 1;
  // alert(cmpd)
  
     for (i=0; i <= len_; i++ ) {
       //    alert(document.frmMain.elements[i].id.substr(2,3));
   
       //var count_ = len_;
       //var dash_ = count_.count('-');
          //alert (len_);  
       var strPos_ = document.frmMain.elements[i].id.indexOf(cmpd)
         
          //if (document.frmMain.elements[i].id.substr(2,3) == cmpd ) {
              if (strPos_ != -1) {
              var strPos = document.frmMain.elements[i].id.indexOf("_");
              
var strId = document.frmMain.elements[i].id.slice(strPos + 1) + "_" + document.frmMain.elements[i].id.slice(0,strPos)               
     // document.frmMain.elements[i].value = document.getElementById(strId).value * document.getElementById('mult').value;
    document.frmMain.elements[i].value = Math.round((document.getElementById(strId).value * document.getElementById('DemandedQty').value) * 100 ) / 100;  
     } 
    }  
}
</script>

Thank you

[handcraftedweb]

Sorry, try this

function rnd(n) {
    return n.toFixed (2);            
}

or

    document.frmMain.elements[i].value = (document.getElementById(strId).value * document.getElementById('DemandedQty').value).toFixed (2);

[newphpcoder]

Sorry, try this

function rnd(n) {
    return n.toFixed (2);            
}

or

    document.frmMain.elements[i].value = (document.getElementById(strId).value * document.getElementById('DemandedQty').value).toFixed (2);

Thank you