Answer / srinivasan

function validate()
{
var Name = document.getElementById("txtName");
if( Name.value=="")
{
alert("Please enter the Name");
return false;
}
}

button OnClick() we hav to cal this function

Answer / amit das

function validate()
{
if(document.getElementById("NameId").value == null)
alert("Please enter the name");
document.getElementById("NameId").focus();
return false;
}

or

function validate()
{
with(document.formname)
{
txtboxid.value == ""
alert("Please enter value");
txtboxid.focus();
return false;
}
}

or we can use

document.form.txtboxid.value

instead of

document.getElementById("NameId").value

Answer / gangadhar

function validate()
{
if(document.getElementById("NameId").value == null)
alert("Please enter the name");
document.getElementById("NameId").focus();
return false;
}

in button OnClick() we hav to cal this function

Differentiate between client-side and server-side validations in web pages.

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