2 decimal places inputmask

Just came up with an easy and highly efficient method without jQuery or any libraries:

HTML:

<input type="number" oninput="inputChange()" />

Javascript:

function inputChange(){
    let value = Number(document.activeElement.value);
    let pos = document.activeElement.selectionStart;
    document.activeElement.value = value.toFixed(2);

    document.activeElement.selectionStart = pos;
    document.activeElement.selectionEnd = pos;
}

I call it the West Coast Steamroller

According to the documentation the correct syntax for defining numeric figures is to use the 9 character, so in your case this would be 99[.99]. Try this:

$(document).ready(function() {
  $(".decimal").inputmask('decimal', {
    rightAlign: true
  });
  $(".currency").inputmask('currency', {
    rightAlign: true
  });
  $(".custom1").inputmask({
    mask: "99[.99]",
    greedy: false,
    definitions: {
      '*': {
        validator: "[0-9]"
      }
    },
    rightAlign: true
  });
  $(".custom2").inputmask({
    'alias': 'decimal',
    rightAlign: true,
    'groupSeparator': '.',
    'autoGroup': true
  });
  $(".custom3").inputmask({
    'alias': 'decimal',
    'mask': "99[.99]",
    rightAlign: true
  });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.inputmask/3.2.6/jquery.inputmask.bundle.min.js"></script>

<input type="text" class="decimal" /><br>
<input type="text" class="currency" /><br>
<input type="text" class="custom1" /><br>
<input type="text" class="custom2" /><br>
<input type="text" class="custom3" value="0" /><br>

If your system is in English, use this regex:

$(".mask").inputmask('Regex', {regex: "^[0-9]{1,6}(\\.\\d{1,2})?$"});

If your system is in Brazilian Portuguese, use this:

Import:

<script
        src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>

    <script     src="https://cdnjs.cloudflare.com/ajax/libs/jquery.mask/1.14.15/jquery.mask.min.js"></script>

    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.inputmask/3.2.6/jquery.inputmask.bundle.min.js"></script>

HTML:

<input class="mask" type="text" />

JS:

$(".mask").inputmask('Regex', {regex: "^[0-9]{1,6}(\\,\\d{1,2})?$"});

Its because in Brazilian Portuguese we write "1.000.000,00" and not "1,000,000.00" like in English, so if you use "." the system will not understand a decimal mark.

It is it, I hope that it help someone. I spend a lot of time to understand it.