How do I validate a decimal field with jquery and regex?

Question

this is what I have so far:

$j(element)..keypress(function(e){
        var val = $j(this).val();
        if ((\"1234567890.\").indexOf(e.charCode) > -1){
             


        

Answer 1

This checks a decimal number, with an optional +/- sign character. Found under 5sec in google. /^\s*(\+|-)?((\d+(\.\d+)?)|(\.\d+))\s*$/