Input field value - remove leading zeros

Question

I have a textbox in Javascript. When I enter \'0000.00\' in the textbox, I want to know how to convert that to only having one leading zero, such as \'0.0

Answer 1

It sounds like you just want to remove leading zeros unless there's only one left ("0" for an integer or "0.xxx" for a float, where x can be anything).

This should be good for a first cut:

while (s.charAt(0) == '0') {            # Assume we remove all leading zeros
    if (s.length == 1) { break };       # But not final one.
    if (s.charAt(1) == '.') { break };  # Nor one followed by '.'
    s = s.substr(1, s.length-1)
}

Answer 2

Try this:

<input type="text" onblur="this.value=this.value.replace(/^0+(?=\d\.)/, '')">