javascript - Textbox null control with script -

i have textbox(it gets integer value) on page , set "0" textboxes script @ startup.

 <script>     $(document).ready(function () {         $('.myclass').each(function () {             this.value = this.value || "0";         });     }); </script> 

also textbox looks like:

 @html.textboxfor(model => model.answers[i].answer, new { @style = "width:45px; margin-left:10px; margin-bottom:10px; text-align:center;", @class="myclass" })  @html.validationmessagefor(model => model.answers[i].answer) 

how can set null value after validation after postback? because script set 0 value textbox after every postback?

thanks help.

<script>     $(document).ready(function () {         $('.myclass').each(function () {             this.value = this.value || "";         });     }); </script> 

if use script above empty textbox. not null value, want.

you should better disable it:

<script>    $(document).ready(function () {        $('.myclass').each(function () {            this.attr('disabled', true);        });    }); </script>