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Empty Text Box Validation Not Working

Empty Text Box Validation Not Working

satheesh kumar

10yAsked Apr 12, 2016, 11:02 PM1.2kJSP

OnClientClick="return Validate()"

function Validate()

{

console.log("kkkk");

alert("pppp");

var pgng = document.getElementById("ContentPlaceHolder1_txtUsername").value.trim();

alert(pgng=='');

console.log(pgng);

if (document.getElementById("ContentPlaceHolder1_txtUsername").value.trim() == '') {

alert('The textbox should not be empty...');

document.getElementById("ContentPlaceHolder1_txtUsername").focus();

return false;

}

return false;

}

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Nilesh Jadav10y ago
This link will help you - http://www.jquerybyexample.net/2012/12/jquery-to-check-all-textboxes-empty.html?m=1
Manas Mohapatra10y ago
Instead of "ContentPlaceHolder1_txtUsername", use asp expression to get correct client ID. Try like below:

if (document.getElementById("<%=txtUsername.ClientID%>").value.trim() == '') {
   alert('The textbox should not be empty...');
   document.getElementById("<%=txtUsername.ClientID%>").focus();

   return false;
}