How to fetch the company details from company Doctype

I want to display the company name ,abbr etc in the Dashboard workspace using custom html block .how to implement this?

@neha How to use custom html block - #2 by bahaou
change the js code to :{
    method: "frappe.client.get",
        args: {
            doctype: "Company",
            name: frappe.defaults.get_user_default("Company"),
             callback(r) {
                 if(r.message) {

create html element with id #abbr