HTML text input allow only numeric input

Question

Is there a quick way to set an HTML text input () to only allow numeric keystrokes (plus \'.\')?

Answer 1

You can also compare input value (which is treated as string by default) to itself forced as numeric, like:

if(event.target.value == event.target.value * 1) {
    // returns true if input value is numeric string
}

However, you need to bind that to event like keyup etc.