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Validations

Sai Ram

Hi..

How to validate an ASP.Net Textbox using javascript.It should not accept Empty Textbox and even it should not accept if we enter spaces in front with empty text should also not allow.

2 Replies

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Jignesh Trivedi14y ago
Accepted answer
hi Ravi,

try...
Java script function
function validateWholeText(obj) {
    if (document.getElementById(obj.id).value == "") {
        alert('Empty text is not allowed.');
        obj.focus();
    }
}
function ValidateTextbox(ID, keyCode) {
    if (document.getElementById(ID).value == "" && keyCode == 32) {
        return false;
    }
}

text box defination

this will not accept space as first digit and also not allow empty text on lost focus.

hope this will help you.
0

rakesh chaudhari14y ago

Hi Friend,
Take this Validation

function validate1() { 
            var len = document.getElementById("TextBox1").value.length; 
            if (event.keyCode == 32 && len == 0) { 
                document.getElementById("TextBox1").value = ""; 
                alert("Cannot start with a space"); 
                return false; 
            } 
            else if ((event.keyCode > 96 && event.keyCode < 122) || (event.keyCode > 64 && event.keyCode < 92) || event.keyCode == 32) { 
                return true; 
            } 
            else { 
                event.returnValue = false; 
                return false; 
            } 
        }



Hava A Happy Coding

0