Is There a Max Size to the Length of a Hidden Input in HTML

is there a max size to the length of a hidden input in html?

It depends on the method you send the form with.

With GET, there is a commonly agreed on limit of about 1-2 kilobytes, depending on browser and server limitations.

With POST, there is no technical limit in the browser, but usually one on the server side - see e.g. Apache's LimitRequestBody, PHP's post_max_size and so on.

Limit for Hidden Fields in HTML Form

There is "NO" limit over how many hidden fields are there in a form..!

But, when you are trying to POST the value of all the hidden fields and normal should not more than post_max_size which is defined in php.ini

Hidden Input Max Value Size

That is not the property, the correct property name is: maxlength="9999" and the default value is 524288

Issue with hidden input and very large values in HTML and ASP.NET MVC 3 Razor

use the grouping

<input name="someIDs[0]" type="hidden" value="5538680"/>
<input name="someIDs[1]" type="hidden" value="5538683/>

update:

controllers

public ActionResult Test()
    {
        Random rand = new Random();
        List<int> list = new List<int>();
        for (int i = 0; i < 10000; i++)
        {
            list.Add(rand.Next(1,999999));
        }
        return View(list);
    }
    [HttpPost]
    public ActionResult Test(int[] item)
    {
        return View(item.ToList());
    }

view

@model List<int>
@{
    ViewBag.Title = "Test";
}

@using (Html.BeginForm())
{
    foreach (int item in Model)
    {

        <input type="hidden" name="item" value="@item" />
    }
    <input type="submit" value="submit" />
}

max length for value attribute of a html input text field

There are no limits, but be logical if you think there is too much data than there probably is. Check out this codepen and just keep typing into the input it can go on for well... a long time.

http://codepen.io/anon/pen/qdpgGQ

Jquery to show length and update view:

$('#name').keyup(function () {
  $('#display').text($(this).val());

var myLength = $("#name").val().length;
  $('#display1').text(myLength);

});

maximum size for input field name?

According to the specs, there is no documented limit, however PHP may limit you according to the max_file_size or other properties in php.ini. That's usually over 5MB though, so I wouldn't be worried.

What is the maximum length of html textbox

As to the HTML side, when the maxlength attribute is not specified, then the maximum length of the input value is unlimited. However, if you're sending the request as GET instead of POST, then the limit will depend on the webbrowser and webserver used. The HTTP 1.1 specification even warns about this, here's an extract of chapter 3.2.1:

Note: Servers ought to be cautious about depending on URI lengths
above 255 bytes, because some older client or proxy
implementations might not properly support these lengths.

As to the webbrowsers, the practical limit is in Firefox about 8KB, in Opera about 4KB and in IE and Safari about 2KB. So the total length of all inputs should not exceed this if you want a succesful processing. As to the webservers, most have a configureable limit of 8KB. When the limit is exceeded, then it will often just be truncated, but some webservers may send a HTTP 414 error.

When you're sending the request as POST, then the limit depends on the server config. Often it's around 2GB. When it's exceeded, the server will often return a HTTP 500 error.

Is there any limit to Hidden Field Length in ASP.net

ASP.NET does have a maximum request size-- it is 4MB by default, according to the documentation. If you think you might be hitting that limit, you can increase it by adding the following to your web.config file inside the <system.web> tag:

<httpRuntime maxRequestLength="x">

where x is the desired maximum in Kilobytes. So for example, 10240 would be 10MB.

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