src/component/intro/intro.js
function _disableInteraction() {
    var disableInteractionLayer = document.querySelector('.introjs-disableInteraction');

    if (disableInteractionLayer === null) {
        disableInteractionLayer = document.createElement('div');
        disableInteractionLayer.className = 'introjs-disableInteraction';
        this._targetElement.appendChild(disableInteractionLayer);
    }

    _setHelperLayerPosition.call(this, disableInteractionLayer);
}
function _disableInteraction() {
    var disableInteractionLayer = document.querySelector('.introjs-disableInteraction');

    if (disableInteractionLayer === null) {
        disableInteractionLayer = document.createElement('div');
        disableInteractionLayer.className = 'introjs-disableInteraction';
        this._targetElement.appendChild(disableInteractionLayer);
    }

    _setHelperLayerPosition.call(this, disableInteractionLayer);
}
function _disableInteraction ( ) { var disableInteractionLayer = document . querySelector ( '.introjs-disableInteraction' ) ; if ( disableInteractionLayer === null ) { disableInteractionLayer = document . createElement ( 'div' ) ; disableInteractionLayer . className = 'introjs-disableInteraction' ; this . _targetElement . appendChild ( disableInteractionLayer ) ; } _setHelperLayerPosition . call ( this , disableInteractionLayer ) ; }
Add disableinteraction layer and adjust the size and position of the layer

@api private
@method _disableInteraction
Add disableinteraction layer and adjust the size and position of the layer