Round up Result for 3 decimal places in javascript multiplication

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<script language="javascript" type="text/javascript">
function mul() {

        var net_wt = document.getElementById('<%= txtPre_NetWt.ClientID %>');
        var    ip1 = document.getElementById('<%= txtPrep_RecIp.ClientID %>');
        var     Wt = document.getElementById('<%= txtPre_Wt.ClientID %>');
        var     z1 = 0, z2 = 0 ;


        if (net_wt.value != "") z1 = net_wt.value;
        if (ip1.value !="") z2  =ip1.value;
                 Wt.value =parseInt(z1)* parseInt(z2)* 0.01;
            

    }
</script>

Above javascript multilication, i want to round up 3 decimal places for wt.value... for example Wt=78.1159round for 3 decimal
like Wt=78.116

How can do this piz help any one... i tried some codes , they dont do accurate calculation..

so please help me....

Posted 7-May-15 23:54pm

sharat naik

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hypermellow · Accepted Answer · 2015-05-08T00:08:00

Hi,

Have a look at JavaScripts toFixed Method[^].

In you example, it would be used like:

JavaScript

function mul() {
 
        var net_wt = document.getElementById('<%= txtPre_NetWt.ClientID %>');
        var    ip1 = document.getElementById('<%= txtPrep_RecIp.ClientID %>');
        var     Wt = document.getElementById('<%= txtPre_Wt.ClientID %>');
        var     z1 = 0, z2 = 0 ;
 

        if (net_wt.value != "") z1 = net_wt.value;
        if (ip1.value !="") z2  =ip1.value;
                 Wt.value =(parseInt(z1)* parseInt(z2)* 0.01).toFixed(3);
            
 
    }

... hope it helps.

Sisir Patro · Accepted Answer · 2015-05-08T00:13:00

Hi,

1. You can use Math.Round function to round up your values.
2. parseFloat("123.456").toFixed(3);

For reference please follow the following link.

1. round-to-at-most-2-decimal-places

2. how-to-round-up-a-number-in-javascript

3. Math.Round()

Hope you can achieve your requirement now.

Thanks & Regards
Sisir patro

Round up Result for 3 decimal places in javascript multiplication

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