JavaScript´úÂë(1)

//ºǫ́CSµ÷ÓÃǰ̨JS·½·¨
ClientScript.RegisterStartupScript(this.GetType(), "onclick", "<script>CheckInput()</script>");
//УÑéÊäÈë¿òÊÇ·ñΪ¿Õ£¬Ð£ÑéÊÇ·ñÊÇÊý×Ö
<script type="text/javascript" language="javascript">
         function CheckInput() {
             if (document.form1.txt_ReceiptID.value == "") {
                 alert('±¨Ïúµ¥ºÅ²»ÄÜΪ¿Õ!');
                 document.form1.txt_ReceiptID.focus();
                 return false;
             }
             else {
                    if(checknumber(document.form1.txt_ReceiptID.value)
                    {
                        alert("±¨Ïúµ¥ºÅΪÊý×Ö£¡");                       
                         document.form1.txt_ReceiptID.focus();
                         return false;
                 &nbs