Question

How can I set the value of a textbox to user entered value.
For ex

    <input type = "text" name = "somename" value = "">

If the user enters “3” then it should become

    <input type = "text" name = "somename" value = "3">

All I want is that when I process the textbox for value in a servlet, I should be able to get the value 3 for that textbox. well, there is more to it as David says. The textbox is part of a cart application and it denotes quantity of an item. What I want to do is to be able to take the value of any item and store it in the database. I will have a default value of 1 for every textbox. But when I POST the data, I want it to post the value entered by the user and not the default value

Answer 1

The value in the textbox is automatically transferred to the server when you submit the form as somename=3 (or whatever value).

However, if you want to actually update the value attribute of the element, you could use jQuery to do something like:

HTML

<input id="name" type="text" name="somename" value="">

jQuery

$('#name').change(function(){
    $(this).attr('value',$(this).val());
});

Javascript

(untested, but might work if you don’t want to use jQuery)

<input type="text" name="somename" value="" onchange="this.attributes['value'] = this.value;">