📄 p217_validation.htm

📁 javascript source code part2

💻 HTM

字号:

<HTML><HEAD><SCRIPT>
function validate()
{
  with ( window.document.forms[0] )
  {
    if (    country.value.length != 2
        || !parseInt(postal.value,10)
        || parseInt(postal.value,10) < 0
       )
    {
      alert("Evidently you're lost.");
      return false;
    }
  }
  return true;
}
</SCRIPT></HEAD>
<BODY><FORM ACTION="POST" ONSUBMIT="return validate()">
<H3> Where are you? </H3>
<BR>Enter your two letter country code:
<INPUT TYPE="text" NAME="country" ONCHANGE="this.value=this.value.toLowerCase()">
<BR>Enter your postal code:
<INPUT TYPE="text" NAME="postal">
<BR><INPUT TYPE="submit">
</FORM></BODY></HTML>

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