Question

I have a keypress function bound to an element, this element needs to only allow positive and negative decimal characters. i.e. 0-9, ‘.’ , ‘-‘

any other characters I need to prevent the character being inputted

Is there any way to achieve this in the current keypress function

 $('.test').keyup(function (event) {

     //if character is NOT ok i.e. 0-9, '.' , '-'
     //STOP
     ..ELSE
    //continue to do something

});

P.s. I am using jquery

Answer 1

One other way is to replace all illegal characters when typing:

$("selector").keyup(function (e) {
        this.value = this.value.replace(/[^0-9\.-]/g, '');
    });

May be useful, when user not typing text, but pasting it.