How to fetch the company details from company Doctype

ERPNext
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2

@neha How to use custom html block - #2 by bahaou
change the js code to :

 frappe.call({
    method: "frappe.client.get",
        args: {
            doctype: "Company",
            name: frappe.defaults.get_user_default("Company"),
             },
             callback(r) {
                 if(r.message) {
                      root_element.querySelector("#abbr").textContent=r.message.abbr;
                 }
             }
});

create html element with id #abbr