文本输入自动小数

Question

How to make text input where automatic with decimal ','?

<td><?= $form->field($model, 'Payment')->textInput(['maxlength' => 7, 'style' => 'width:120px;'])?></td>

Answer 1

<input type="number" id="decimalvalue" name="decimalvalue" onkeyup="setDecimalValue()">

<script>
    function setDecimalValue() {
        var num = $('#decimalvalue').val();
        var n = num.toFixed(2);
        $('#decimalvalue').val(n);
    }
</script>