輸入(1-100):

 

  • Source 
    <HTML>
<BODY>

<SCRIPT Language="JavaScript">
   function CheckInput() {
      v = document.Form1.Num.value;
      n = parseInt(v);
      if ( isNaN(n) || n <= 0 || n > 100) {
         window.alert("請輸入 1-100 的整數"); 
         return false;
      }
      else {
         document.Form1.pass.value = "Passed";
         return true;
      }
   }
</SCRIPT>

<FORM Name=Form1 OnSubmit="return CheckInput();">
輸入(1-100):<INPUT Type=Text Name=Num><P>
<INPUT Type=Hidden Name=pass Value="NotPassed">
<INPUT Type=Submit Value="送出">
</FORM>

</BODY>
</HTML>