Question

I would like have always only float value with dot (not comma) in my inputs.

<input type="text" class="dot"> <br />
<input type="text" class="dot"> <br />
<input type="text" class="dot"> <br />

$('.dot').keydown(function(){
        $(this).val($(this).val().toString().replace(/\,/g, '.'));  
})

this replace comma to dot, but this should not be have > 1 dot and others… This should be accept only [0-9] and .

if i type a different value than other [0-9] and . then this value should be remove – ”.

How can i make it?

http://jsfiddle.net/ZtkBW/

Answer 1

Hiya demo http://jsfiddle.net/9Ry9t/ or http://jsfiddle.net/ZtkBW/2/ or http://jsfiddle.net/HJnLD/

Bit different from your solution but if you keen to use this, it will not allow any characters to type in the text box.

The solution does full validation for numbers and for float it will not take (dot)

code sample

$('.number').keypress(function(event) {
    if(event.which < 46
    || event.which > 59) {
        event.preventDefault();
    } // prevent if not number/dot

    if(event.which == 46
    && $(this).val().indexOf('.') != -1) {
        event.preventDefault();
    } // prevent if already dot
});​