Limit number of characters in input type number

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Im trying to limit to X number the characters in a input (type of number). ive tried a lot of options and none seems to work. I dont want to use the option tel as it needs the numeric keyboard on a mobile device (yes, with ., and all the symbols) I tried also the pattern solution but it only worked for iOS, didnt work in android (displayed the normal keyboard).

The best way would be that if the user hits the limit dont let him type anymore, if he wants to highlight the text and re-type a different number he is allow to. Just not let him type more than the specified number of characters.

So, any help is appreciated.

Note: charCode is non-standard and deprecated, whereas keyCode is simply deprecated.

Check this code

JavaScript

<script>
function check(e,value)
{
    //Check Charater
    var unicode=e.charCode? e.charCode : e.keyCode;
    if (value.indexOf(".") != -1)if( unicode == 46 )return false;
    if (unicode!=8)if((unicode<48||unicode>57)&&unicode!=46)return false;
}
function checkLength()
{
    var fieldLength = document.getElementById('txtF').value.length;
    //Suppose u want 4 number of character
    if(fieldLength <= 4){
        return true;
    }
    else
    {
        var str = document.getElementById('txtF').value;
        str = str.substring(0, str.length - 1);
        document.getElementById('txtF').value = str;
    }
}

and HTML input with number type below

onInput //Is fired also if value change from the side arrows of field in Chrome browser

<input id="txtF" type="number" onKeyPress="return check(event,value)" onInput="checkLength()" />

Fiddle Demo

Update -- Little bit generic code example

Change above function into this one

function checkLength(len,ele){
  var fieldLength = ele.value.length;
  if(fieldLength <= len){
    return true;
  }
  else
  {
    var str = ele.value;
    str = str.substring(0, str.length - 1);
    ele.value = str;
  }
}

In HTML use like this

<!-- length 4 -->    
<input id="txtF" type="number" onKeyPress="return check(event,value)" onInput="checkLength(4,this)" />
<!-- length 5 -->    
<input  type="number" onKeyPress="return check(event,value)" onInput="checkLength(5,this)" />
<!-- length 2 -->    
<input  type="number" onKeyPress="return check(event,value)" onInput="checkLength(2,this)" />

Demo

maxlength ignored for input type="number" in Chrome, And you can add a max attribute that will specify the highest possible number that you may insert <input type="number" max="999" />. if you add both a max and� The maxlength attribute specifies the maximum number of characters allowed in the <input> element. Browser Support The numbers in the table specify the first browser version that fully supports the attribute.

Another option - the tel input type abides by the maxlength and size attributes.

<input type="tel" size="2" maxlength="2" />

<input type="tel" size="10" maxlength="2" />

75 How can I limit possible inputs in a HTML5 "number" element?, <input type="text" id="username" name="username" maxlength="10"><br><br> The maxlength attribute specifies the maximum number of characters allowed� To limit the number of characters, use the maxlength attribute. The max and min attributes are used with number, range, date, datetime, datetime-local, month, time and week input types. Example. You can try to run the following code to limit the number of characters allowed in form input text field:

May be it will be useful.

Here is field to input Patient Age. It allows to input 3 numbers only.

HTML

<input autocomplete="off" class="form-control"  id="Patient_Age" max="150" maxlength="3" name="PatientAge" placeholder="Age" size="3" type="number" value="0">

JS

<script>
    $(function () {         
        $("#Patient_Age").keydown(function (e) {
            // Allow: backspace, delete, tab, escape, enter  
            if ($(this).val().length <= 2 || $.inArray(e.keyCode, [46, 8, 9, 27, 13, 110]) !== -1 ||
                // Allow: Ctrl+A
                // (e.keyCode == 65 && e.ctrlKey === true) ||
                // Allow: home, end, left, right
                (e.keyCode >= 35 && e.keyCode <= 39)) {
                // let it happen, don't do anything
                return;
            }
            else {
                event.preventDefault();
            }
            // Ensure that it is a number and stop the keypress
            if ($(this).val().length <= 2 || (e.shiftKey || (e.keyCode < 48 || e.keyCode > 57)) && (e.keyCode < 96 || e.keyCode > 105)) {
                e.preventDefault();
            }
            else {
                event.preventDefault();
            }
        });
    }); // end of $

</script>

HTML input maxlength Attribute, The maximum number of characters (as UTF-16 code units) the user can enter into the text input. This must be an integer value 0 or higher. The maximum number of characters that will be accepted as input. The maxlength attribute specifies the maximum number of characters allowed in the element. Maxlength W3 schools

The HTML5 number type input has min and max attributes.

If you wanted to limit the number of characters to 1 you could set a min of 0 and a max of 9.

You can also set the step attribute, which is 1 by default, but would come in use if you wanted the ability to select decimals or other rounded numbers.

<input type="number" maxlength="1" max="9" min="1" size="1" />

Here's the full demo

<input type="text">, input elements of type number are used to let the user enter a number. If the value of the max attribute isn't a number, then the element has no formatting characters to override directionality within the placeholder; see� The <input type="range"> defines a control for entering a number whose exact value is not important (like a slider control). Default range is 0 to 100. Default range is 0 to 100. However, you can set restrictions on what numbers are accepted with the min , max , and step attributes:

please review this code

<script language="javascript" type="text/javascript">
function limitText(limitField, limitCount, limitNum) {
    if (limitField.value.length > limitNum) {
        limitField.value = limitField.value.substring(0, limitNum);
    } else {
        limitCount.value = limitNum - limitField.value.length;
    }
}
</script>

<form name="myform">
<input name="limitedtextfield" type="text" onKeyDown="limitText(this.form.limitedtextfield,this.form.countdown,15);" 
onKeyUp="limitText(this.form.limitedtextfield,this.form.countdown,15);" maxlength="15"><br>
<font size="1">(Maximum characters: 15)<br>
You have <input readonly type="text" name="countdown" size="3" value="15"> characters left.</font>
</form>

<input type="number">, Get code examples like "how to set maxlength of input type number in html" instantly right from your google search results with the Grepper� And you can add a max attribute that will specify the highest possible number that you may insert <input type="number" max="999" /> if you add both a max and a min value you can specify the range of allowed values: <input type="number" min="1" max="999" /> The above will still not stop a user from manually entering a value outside of the

how to set maxlength of input type number in html Code Example, number: It contains single value number which allows the maximum number of character in <input> element. Its default value is 524288. Example: filter_none input type = "text". name = "usrname". maxlength = "12" >. < br >. If the value of the type attribute is text, email, search, password, tel, or url, this attribute specifies the maximum number of characters (in Unicode code points) that the user can enter; for other control types, it is ignored. So maxlength is ignored on <input type="number"> by design.

HTML, Specifies the maximum number of characters that can be entered in a text-type input. Code Example. <form> <label for="update">What's your status?</label><br >� Character counting tools can be a huge help in many situations, especially when submitting written material online. Online submission forms frequently limit character input. A college admissions essay may limit input to 5000 characters, while social media may limit a status update to 280 characters.

What Input Maxlength Does In HTML: An Easy Tutorial �, Limit characters of text fields at input type=”text” and textarea using html attribute or javascript in online forms and display the remaining number� <input> elements of type number are used to let the user enter a number. They include built-in validation to reject non-numerical entries. The browser may opt to provide stepper arrows to let the user increase and decrease the value using their mouse or by simply tapping with a fingertip.

Comments
  • Use maxlength property in your <input> tag.
  • that would be great! if maxLenght would be supported by number type. in HTML5 the input type of number doesnt have this property.
  • possible duplicate of Limit number of characters allowed in form input text field
  • Not duplicated! I need to be TYPE="NUMBER" not text.
  • I stand corrected, not a duplicate.
  • It helped me too. Thx @Blu
  • Still allows to enter at start and middle, removing the last char.
  • @RonaldDsouza Yes because it was not a requirement in question. But if you don't want to allow in start or middle also then see YashPatel answer if it can fits on your requirement stackoverflow.com/a/22088379/2385565
  • @Blu No it doesn't fit. If I input 9999999999(length of 10 numbers), I am still able to press the up arrow and take that digit to 10000000000(11 numbers)
  • @RonaldDsouza You can off that spinners by using css. Updated fiddle jsfiddle.net/ys1d7xpr . Otherwise its better if you start a new question with all your requirements. Your requirements different then the current OP requirement.
  • Yes that would be the best way to go, if, I would need the "." symbols. Its like a weight calculator, the user can enter 123.3 pounds or 123 pounds. If I use "tel" on the mobile devices the keyboard that it will show up is the telephone one, with out "." option.