Scriptet skal ikke give alert ved 123456789 samt tom streng
<HTML><HEAD>
<TITLE>Test Input Validation</TITLE>
<SCRIPT LANGUAGE="JavaScript">
function testResults (form) {
TestVar = isNumberString (form.inputbox.value)
if (TestVar == 1)
alert ("numerisk");
else
alert ("alfastring");
}
function isNumberString (InString) {
if(InString.length==0) return (false);
var RefString="1234567890";
for (Count=0; Count < InString.length; Count++) {
TempChar= InString.substring (Count, Count+1);
if (RefString.indexOf (TempChar, 0)==-1)
return (false);
}
return (true);
}
</SCRIPT>
</HEAD>
<BODY>
<FORM NAME="myform">Enter a string with numbers only:
<INPUT TYPE="text" NAME="inputbox" VALUE="">
<INPUT TYPE="button" NAME="button" Value="Click" onClick="testResults(this.form)">
</FORM>
</BODY>
</HTML>
