Magento 2.3 Javascript widget get defaultqty

;(function ($, window, document, undefined) {

$.widget("infortis.qtycontrol", {

    options: {
        qtyButtonSelector: '.qty-button'
        , qtyButtonsWrapperSelector: '.qty-buttons-wrapper'
        , errorColor: 'red'
    }

    , inputField: undefined
    , qtyButtons: undefined

    , _create: function()
    {
        this._initPlugin();
    }

    , _initPlugin: function()
    {
        var _self = this;

        // Get quantity field
        this.inputField = this.element;

        // Insert plus/minus buttons
        this.inputField.after('

‘);
this.inputField.before(‘

‘);

// Activate plus/minus buttons
this.qtyButtons = this.inputField.next(this.options.qtyButtonsWrapperSelector).find(this.options.qtyButtonSelector);
this.qtyButtons.on(‘click’, function() {

var $button = $(this);
var oldValue = _self.inputField.val();
var newVal = 0;

if (isNaN(oldValue))
{
_self.inputField.css(‘color’, _self.options.errorColor);
}
else
{
if ($button.hasClass(‘increase’))
{
newVal = _self.qtyAdd(parseFloat(oldValue), 1, 4);
_self.inputField.css(‘color’, ”);
}
else
{
var candidateNewValue = _self.qtySubtract(parseFloat(oldValue), 1, 4);
if (oldValue > 0 && candidateNewValue > 0)
{
newVal = candidateNewValue;
}
else
{
newVal = 0;
_self.inputField.css(‘color’, _self.options.errorColor);
}
}

_self.inputField.val(newVal);
}

});

}

, qtyAdd: function(a, b, precision)
{
var x = Math.pow(10, precision || 2);
return (Math.round(a * x) + Math.round(b * x)) / x;
}

, qtySubtract: function(a, b, precision)
{
var x = Math.pow(10, precision || 2);
return (Math.round(a * x) – Math.round(b * x)) / x;
}

}); //end: widget

})(jQuery, window, document);