问HTML输入只接受0-9(英文数字)和০-৯(孟加拉数字)？

EN

var allowedKeys = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9",
  "ARROWRIGHT", "ARROWLEFT", "TAB", "BACKSPACE", "DELETE", "HOME", "END", "০", "১", "২", "৩", "৪", "৫", "৬", "৭", "৮", "৯"
];

if (document.readyState === "complete") onLoad();
else addEventListener("load", onLoad);

function onLoad() {
  document.querySelectorAll("input.numeric").forEach(function(input) {
    input.addEventListener("keydown", onInputKeyDown);
    input.addEventListener("paste", onInputPaste);
  });
}

function onInputKeyDown(event) {
  if (!allowedKeys.includes(event.key.toUpperCase()) && !event.ctrlKey) {
    event.preventDefault();
  }
}

function onInputPaste(event) {
  var clipboardData = event.clipboardData || window.clipboardData;
  if (/^[0-9০-৯]+$/g.test(clipboardData.getData("Text"))) return;
  event.stopPropagation();
  event.preventDefault();
}

<input type="text" class="numeric">

input:invalid {
  border: 2px dashed red;
}

input:valid {
  border: 2px solid black;
}

<form>
  <label for="numberBox">Enter a number</label>
  <input type="text" name="numberBox" pattern="[০-৯0-9]" title="Numbers only">
  <button>Submit</button>
</form>

function validateNumber(event)
{
    var unicode = event.keyCode ? event.keyCode : event.charCode;

    /* For Numbers. */
    if ((unicode >= 48 && unicode <= 57) || (unicode >= 96 && unicode <= 105)) {
    	return true;
    }

    /* For other keys that might allowed like [Backspace]. */

    /*
        8:  Backspace
        9:  Tab
        27: Escape
        35: End
        36: Home
        37: Left Arrow
        39: Right Arrow
        45: Insert
        46: Delete
    */
    var allowedKeys = [8, 9, 27, 35, 36, 37, 39, 45, 46];

    return (allowedKeys.indexOf(unicode) >= 0);
}

Input: <input type="text" onkeydown="return validateNumber(event);">