Hi there,
I need a sample of jave script to format a numeric input field, just I need to show the $ simmbol and the field should put two decila by defaul, just like this sample
$1,200.23
Thanks
Format Input field like $ simbol and decimals
Moderator: General Moderators
Re: Format Input field like $ simbol and decimals
I feel generous today, so I will write it for you
How it works:
I hope it makes sense. Don't forget to say Thank You if you will use this code
Code: Select all
function formatCurrency(x) {
var y = ~~((~~x).toString().length/3);
var str = x.toFixed(2);
while(y--) str=str.replace(/(\d)(\d{3})(,|\.)/, "$1,$2$3");
return str;
}Code: Select all
> var y = ~~((~~x).toString().length/3);
~~number is the same as Math.floor(number), only a little faster
what this piece of code does is calculates at least how many times we need need to insert comma in the string (how many groups by 3 digits exist before dot)
this is how many times we will need to insert comma
> var str = x.toFixed(2);
get string with 2 decimals after dot, "1234.5" => "1234.50" "12" => "12.00" "12.345" => "12.35"
> while(y--) str=str.replace(/(\d)(\d{3})(,|\.)/, "$1,$2$3");
replace 4 digits in a row which are followed by comma or dot with "1st digit from original string" "comma" "next 3 digits from original string" "comma or dot from original string"