How Do I Limit the output to 2 decimals.

Question

1.44/5 (2 votes)

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Here is my code. if you enter 12 / 88 you get 7.3333333333333333
I want any division to be only 2 decimals long but can't seem to find the correct way. I want to have the result in my TextBoxAvgTimeMedRec field.

XML

<script lang='text/javascript'>
  function Calculate()
  {
    if ( (document.getElementById('<%= TextBoxNumPatInt.ClientID%>').value != " ") && (document.getElementById('<%= TextBoxNumMinDoc.ClientID%>').value != " ") )
    {
        document.getElementById('<%= TextBoxAvgTimeMedRec.ClientID%>').value = parseFloat(document.getElementById('<%= TextBoxNumMinDoc.ClientID%>').value) / parseFloat(document.getElementById('<%= TextBoxNumPatInt.ClientID%>').value);
    }
  }
</script>

Posted 1-Oct-15 10:17am

Member 11598884

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3 solutions

Solution 1

User toFixed function for this:

parseFloat("12.344343").toFixed(2)

Posted 1-Oct-15 10:39am

Moykn

Comments

Krunal Rohit 2-Oct-15 0:35am

5!
-KR

Solution 2

You can either use Math.round or toFixed to limit decimal places. Here is the script:

C#

var a = 12;
var b = 88;
var c = a/b;
alert( Math.round(c * 100) / 100 );
alert(c.toFixed(2));

Posted 1-Oct-15 10:41am

Sreekanth Mothukuru

Updated 1-Oct-15 10:42am

v2

Comments

Krunal Rohit 2-Oct-15 0:35am

5!
-KR

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Palash Mondal_ · Accepted Answer · 2015-10-01T20:15:00

You can use .toFixed()[^] here to get the desired output and also use a generic function to reuse the code again like:

JavaScript

function Calculate() {
    var textBoxNumPatInt = document.getElementById('<%= TextBoxNumPatInt.ClientID%>').value;
    var textBoxNumMinDoc = document.getElementById('<%= TextBoxNumMinDoc.ClientID%>').value;

    if ((textBoxNumPatInt !== "") && (textBoxNumMinDoc !== "")) {
        var newValue = GetDecimalValue(textBoxNumMinDoc) / GetDecimalValue(textBoxNumPatInt);
        document.getElementById('<%= TextBoxAvgTimeMedRec.ClientID%>').value = GetDecimalValue(newValue);
    }
}

function GetDecimalValue(value) {
    return (value ? parseFloat(value).toFixed(2) : 0.00);
}

Hope this helps!