KTPortlet is a Metronic's custom plugin defined in [root]/theme/default/src/assets/js/theme/core/base/portlet.js.

First parameter is the id, class, or tag of the HTML element. The second parameter is for the options.

 var portlet = new KTPortlet(id, options);

 var portlet = new KTPortlet('main_portlet', {
    bodyToggleSpeed: 400,
    tooltips: true,
    tools: {
        toggle: {
            collapse: 'Collapse',
            expand: 'Expand'
        },
        reload: 'Reload',
        remove: 'Remove',
        fullscreen: {
            on: 'Fullscreen',
            off: 'Exit Fullscreen'
        }
    },
    sticky: {
        offset: 300,
        zIndex: 101
    }
});

var options = {
    bodyToggleSpeed: 400,
    tooltips: true,
    tools: {
        toggle: {
            collapse: 'Collapse',
            expand: 'Expand'
        },
        reload: 'Reload',
        remove: 'Remove',
        fullscreen: {
            on: 'Fullscreen',
            off: 'Exit Fullscreen'
        }
    },
    sticky: {
        offset: 300,
        zIndex: 101
    }
};

bodyToggleSpeed: 400

tooltips: true

tools: {
    toggle: {
        collapse: 'Collapse',
        expand: 'Expand'
    }
}

tools: {
    reload: 'Reload',
}

tools: {
    remove: 'Remove',
}

tools: {
    fullscreen: {
        on: 'Fullscreen',
        off: 'Exit Fullscreen'
    }
}

sticky: {
    offset: 300
}

sticky: {
    zIndex: 101
}