Validations

Question

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.

Jignesh Trivedi · 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.

rakesh chaudhari · Answer

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 64 && event.keyCode return true; } else { event.returnValue = false; return false; } } Hava A Happy Coding