How to validates TextBox using javascript

Question

Hi all How to validates TextBox using javascript in ASP.NET ?

Prabhu Raja · Answer

Hi try this. function ValidateForm(){ var name = document.getElementById( ).value; if(name==null){ alert('Please enter your name'); return false; } return true; }

Satyapriya Nayak · Answer

Hi rohatash  Try this for blank validation Untitled Page function ValidateForm(){ var name = document.getElementById('name1').value if(name==''){ alert('Please enter your name'); return false; } return true; } Thanks If this post helps you mark it as answer

kap solutions · Answer

if(document.getElementById(TextBoxID).value==) { //give the alert }

Javeed M Shaikh · Answer

Hi Rohatash What do you mean by validate is it just textbox cannot be blank or something else? Following is the code which checks if the textbox is empty in javsacript: var x = document.getElementById(TextBoxID).value; if(x.length == 0) { // your code here if textbox is blank } Please do not forget to mark Accepted Answer.