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javascriptstringdecimal-point

Add a decimal to a string

I have a script that takes a big number and counts up. The script converts the number to a string so that it can be formatted with commas, but I also need to add a decimal place before the last two digits. I know that this line handles the commas:

if ((i+1) % 3 == 0 && (amount.length-1) !== i)output = ',' + output;

Is there a similar line of code I can add that accomplishes adding a decimal point?

Solution

  • Yes, if you always want the decimal before the last two:

    function numberIt(str) {
    //number before the decimal point
    num = str.substring(0,str.length-3);
    //number after the decimal point
    dec = str.substring(str.length-2,str.length-1)
    //connect both parts while comma-ing the first half
    output = commaFunc(num) + "." + dec;

    return output;
}

    When commaFunc() is the function you described that adds commas.

    EDIT

    After much hard work, the full correct code:

    http://jsfiddle.net/nayish/TT8BH/21/