Allow Decimal & dot(.) only Once in a Textbox

Tapan Kumar Baral

6y1.2k.NET

Hi, I need a Javascript Function that has the definition for allowing the decimal numbers along with a dot(.) only Once, Also the function has to be a parameterized function so that I don't have to write the function for every textbox I have. Please Help. Thank You

3 Replies

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Jignesh Kumar6y ago
Hi Tapan,

Please try this link for you exact requirement,

https://jsfiddle.net/4rsv960t/1/
Your text inlput in html file and below once is jquery function.
"text" value="" id="DecimalAmount"/>
$('#DecimalAmount').keypress(function(event) {
    if (((event.which != 46 || (event.which == 46 && $(this).val() == '')) ||
            $(this).val().indexOf('.') != -1) && (event.which < 48 || event.which > 57)) {
        event.preventDefault();
    }
}).on('paste', function(event) {
    event.preventDefault();
});
Rupesh Kahane6y ago
refer below article
https://www.c-sharpcorner.com/blogs/allow-only-numeric-values-and-allow-only-one-dot-in-textbox-using-javascript1
Jaimin Shethiya6y ago
Hello Tapan,

can you please used below code and let me know if you have any other query.
$('.decimal').keyup(function(){
var val = $(this).val();
if(isNaN(val)){
val = val.replace(/[^0-9\.]/g,'');
if(val.split('.').length>2)
val =val.replace(/\.+$/,"");
}
$(this).val(val);
});
Thanks