function validation() { var valfirst= document.getElementById("FirstName").value; var valsecond=document.getElementById("SecondName").value; if(valfirst == null || valfirst == "") { document.getElementById("spnFirstName").value= "First Name is required"; return false; } else if (valsecond == null || valsecond == "") { document.write("Second Name is required"); return false; } }
<html> <body> <script type="text/javascript" src="External.js"> </script> <form id="frm1" method="get"> First Name: <input type="textbox" id="FirstName"/> <span id="spnFirstName" ></span> Second Name:<input type="textbox" id="SecondName"/> <input type="button" value="Submit" onClick="return validation()"/> <input type="button" value="Clear" onClick="reset()"/> </form> </body> </html>
innerHTML
document.getElementById("spnFirstName").innerHTML = "some text";
var
This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)