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text field character limit based on number field in same form

I am not sure if this is possible but what I am trying to accomplish is a text field which would have a character limit of 5 characters if a number field in the same form has 5 entered, or whatever number is entered as the limit.
Is there some way to accomplish this?

yes you can do that
you just need to set maxlength attribute on basis of numeric textbox
$("#txtNumber").keyup(function(){
$("#txtBox").attr("maxlength",$(this).val());
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="number" id="txtNumber">
<input type="text" id="txtBox">

How to set maximum number of characters in number type textbox?

I have one textbox which is of number type. I want it to accept maximum of 16 digits, not more than that. For that I have tried with "maxlength" attribue and "max" attribute both. But its not working. Can anyone provide me solution?
<input type="number" id="dummy" max="16" />
Edit: I need to enter only whole number since it is used for account number of bank.

There are a few of these "how do I further control type="number" fields" questions here on SO. It boils down to:
You make it a type="number" and accept that you can't further mask the input vs. what the browser does to implement a numeric input, or
You make it type="text" and use pattern and/or maxlength to enforce the specific pattern you want, and accept that the browser won't add a specific UI for numbers.

Input type number doesn't support "maxlength" attribute. You can specify "max" attribute (HTML5), which is the highest number user can input. Something like this: <input type="number" max="999999999999" id="dummy" step="1" min="0">.
Edit: Also specify step attribute to 1.

HTML Field Type Input Number Only or Letter Only Without JavaScript

I create a form, where one field should only be filled with numbers.
I want that field can be filled only with numbers since entering input.
Like this example :
How Can I Use Javascript to Allow Only Numbers to Be Entered in a TextBox?
I've tried using Regex, but when I try to input is still able to enter letters.
<input type="number" min="2" pattern="^[0-9]" class="andi_input required-entry" name="amount" id="amount" required title='Only Number' />
I want it when input to field and not after click the Submit button and the message appear and inform that the field can only be filled with numbers.
I also try to add validate-number, but the result is the same.
How, without javascript, so that the field can only be filled with numbers or letters?
Whether for this kind of case have to use JavaScript or is there another way without JavaScript?

HTML 5 uses the type="number" so make sure that the browser that you are using is compatible. Check it out in action here.

You should check browser compatibility.
You're right with <input type="number" pattern="^[0-9]" />.
Your regex rule is :
^[0-9] :
^ assert position at start of the string
[0-9] match a single character present in the list below
(0-9 a single character in the range between 0 and 9)
You can check your regex here.
I use to use HTML5 Validation and jQuery one because IE is capricious most of the time.
UPDATE :
Without Javascript it's not possible to check pattern on real time. I suggest you to use a jQuery library like : http://www.jqueryscript.net/form/jQuery-Plugin-For-Formatting-User-Input-with-Specified-Pattern-formatter-js.html.

Here is a OneLiner:
<input type="number" onkeypress="return /[0-9]/i.test(event.key)">
or
<input type="text" onkeypress="return /[a-z]/i.test(event.key)">

How to force mobile browsers to pull out numeric keyboard for input type="text"?

In my angularjs app, i have two input fields with type="text", pls see the plunkr here.
The problem is that the currency formatting is not possible for input type="number".
So it it possible to bring up Numeric keyborad for mobile devices when the focus move to input type="text"?
Please help

use "tel" I'm sure this will solve your problem. this will allow you to input alphabates also but it will open numeric keypad
<input type="tel">

Add pattern to it.
<input type="text" pattern="\d*">

Try the below. Additionally you can add "ng-pattern" to manage validation messages etc.
<input type="text" pattern="[0-9]*">

jQuery validation - int field validation sometimes doesn't work

On my website, I have a form that includes CKEditor, and input field for numeric value. Now, sometimes, when I try to submit form, validator is saying, that numeric input field is not in a proper range. The problem is, that the range is set to 1-1000, and I am setting the value that is within this range. So it is totally ignoring my input and assuming that there is nothing. The main problem with that behavior is, that most of the times this works okay (I mean it is validating correctly). But like 10% of the times, it is doing those weird things, and console is throwing no errors... Has anyone had similar problems?
Is it maybe possible to turn off jquery validation for single input field?
Edit: here is my input field:
<input class="text-box single-line" data-val="true" data-val-number="The field Price must be a number." data-val-range="The field Price must be between 1 and 1000." data-val-range-max="1000" data-val-range-min="1" data-val-required="The Price field is required." id="Price" name="Price" type="number" value="0">

Looks like an mvc input to me. I would assume you are using this somewhere: #Html.ValidationFor( m => m.Price ) which you may omit if you wish to remove validation altogether.
If that is not the case, then just remove the data-annotations from the element
<input id="Price" name="Price" value="0" />
However, I think you should also consider allowing the range to be 0-100 or setting the initial value at 1. The reason being that as it stands now if someone clicks submit without making an entry, then the value of the field will be 0, and that will fail the range validation of 1-100.