diff --git a/frappe/contacts/doctype/contact/contact.js b/frappe/contacts/doctype/contact/contact.js
index d318ad14ab..c6ad8cc269 100644
--- a/frappe/contacts/doctype/contact/contact.js
+++ b/frappe/contacts/doctype/contact/contact.js
@@ -1,8 +1,10 @@
 // Copyright (c) 2016, Frappe Technologies and contributors
 // For license information, please see license.txt
 
-cur_frm.email_field = "email_id";
 frappe.ui.form.on("Contact", {
+	onload(frm) {
+		frm.email_field = "email_id";
+	},
 	refresh: function(frm) {
 		if(frm.doc.__islocal) {
 			const last_doc = frappe.contacts.get_last_doc(frm);
diff --git a/frappe/core/doctype/doctype/doctype.js b/frappe/core/doctype/doctype/doctype.js
index 0374026855..95de1f07b5 100644
--- a/frappe/core/doctype/doctype/doctype.js
+++ b/frappe/core/doctype/doctype/doctype.js
@@ -39,8 +39,3 @@ frappe.ui.form.on('DocType', {
 			__('In Grid View') : __('In List View');
 	}
 })
-
-// for legacy... :)
-cur_frm.cscript.validate = function(doc, cdt, cdn) {
-	doc.server_code_compiled = null;
-}
diff --git a/frappe/core/doctype/report/report.js b/frappe/core/doctype/report/report.js
index 903a9cbac4..6b48ca137a 100644
--- a/frappe/core/doctype/report/report.js
+++ b/frappe/core/doctype/report/report.js
@@ -1,78 +1,67 @@
-cur_frm.cscript.report_type = function(doc) {
-	cur_frm.set_intro("");
-	switch(doc.report_type) {
-		case "Report Builder":
-			cur_frm.set_intro(__("Report Builder reports are managed directly by the report builder. Nothing to do."));
-			break;
-		case "Query Report":
-			cur_frm.set_intro(__("Write a SELECT query. Note result is not paged (all data is sent in one go).")
-				+ __("To format columns, give column labels in the query.") + "<br>"
-				+ __("[Label]:[Field Type]/[Options]:[Width]") + "<br><br>"
-				+ __("Example:") + "<br>"
-				+ "Employee:Link/Employee:200" + "<br>"
-				+ "Rate:Currency:120" + "<br>")
-			break;
-		case "Script Report":
-			cur_frm.set_intro(__("Write a Python file in the same folder where this is saved and return column and result."))
-			break;
-	}
-}
-
-cur_frm.cscript.refresh = function(doc) {
-	cur_frm.add_custom_button("Show Report", function() {
-		switch(doc.report_type) {
-			case "Report Builder":
-				frappe.set_route('List', doc.ref_doctype, 'Report', doc.name);
-				break;
-			case "Query Report":
-				frappe.set_route("query-report", doc.name);
-				break;
-			case "Script Report":
-				frappe.set_route("query-report", doc.name);
-				break;
-		}
-	}, "fa fa-table");
-
-	if (doc.is_standard === "Yes") {
-		cur_frm.add_custom_button(doc.disabled ? __("Enable Report") : __("Disable Report"), function() {
-			$.ajax({
-				url: "/api/resource/Report/" + encodeURIComponent(doc.name),
-				type: "POST",
-				data: {
-					run_method: "toggle_disable",
-					disable: doc.disabled ? 0 : 1
-				}
-			}).always(function() {
-				cur_frm.reload_doc();
-			});
-		}, doc.disabled ? "fa fa-check" : "fa fa-off");
-	}
-
-	cur_frm.cscript.report_type(doc);
-}
-
-
 frappe.ui.form.on('Report', {
 	refresh: function(frm) {
-		if(!frappe.boot.developer_mode && frappe.session.user != 'Administrator') {
+		if(!frappe.boot.developer_mode && frappe.session.user !== 'Administrator') {
 			// make the document read-only
 			frm.set_read_only();
 		}
+
+		let doc = frm.doc;
+		frm.add_custom_button(__("Show Report"), function() {
+			switch(doc.report_type) {
+				case "Report Builder":
+					frappe.set_route('List', doc.ref_doctype, 'Report', doc.name);
+					break;
+				case "Query Report":
+					frappe.set_route("query-report", doc.name);
+					break;
+				case "Script Report":
+					frappe.set_route("query-report", doc.name);
+					break;
+			}
+		}, "fa fa-table");
+
+		if (doc.is_standard === "Yes") {
+			frm.add_custom_button(doc.disabled ? __("Enable Report") : __("Disable Report"), function() {
+				frm.call('toggle_disable', {
+					disable: doc.disabled ? 0 : 1
+				}).then(() => {
+					frm.reload_doc();
+				});
+			}, doc.disabled ? "fa fa-check" : "fa fa-off");
+		}
+
+		frm.events.report_type(frm);
 	},
 
 	ref_doctype: function(frm) {
 		if(frm.doc.ref_doctype) {
-			frm.trigger("set_doctype_roles")
+			frm.trigger("set_doctype_roles");
+		}
+	},
+
+	report_type: function(frm) {
+		frm.set_intro("");
+		switch(frm.doc.report_type) {
+			case "Report Builder":
+				frm.set_intro(__("Report Builder reports are managed directly by the report builder. Nothing to do."));
+				break;
+			case "Query Report":
+				frm.set_intro(__("Write a SELECT query. Note result is not paged (all data is sent in one go).")
+					+ __("To format columns, give column labels in the query.") + "<br>"
+					+ __("[Label]:[Field Type]/[Options]:[Width]") + "<br><br>"
+					+ __("Example:") + "<br>"
+					+ "Employee:Link/Employee:200" + "<br>"
+					+ "Rate:Currency:120" + "<br>")
+				break;
+			case "Script Report":
+				frm.set_intro(__("Write a Python file in the same folder where this is saved and return column and result."));
+				break;
 		}
 	},
 
 	set_doctype_roles: function(frm) {
-		return frappe.call({
-			method: "set_doctype_roles",
-			doc:frm.doc,
-			callback: function(r) {
-				refresh_field('roles')
-			}
-		})
+		return frm.call('set_doctype_roles').then(() => {
+			frm.refresh_field('roles');
+		});
 	}
 })
diff --git a/frappe/core/doctype/user/user.js b/frappe/core/doctype/user/user.js
index d334731015..21f05c814d 100644
--- a/frappe/core/doctype/user/user.js
+++ b/frappe/core/doctype/user/user.js
@@ -140,7 +140,7 @@ frappe.ui.form.on('User', {
 			for ( var i=0;i<frm.doc.user_emails.length;i++) {
 				frm.doc.user_emails[i].idx=frm.doc.user_emails[i].idx+1;
 			}
-			cur_frm.dirty();
+			frm.dirty();
 		}
 
 	},
diff --git a/frappe/custom/doctype/property_setter/property_setter.js b/frappe/custom/doctype/property_setter/property_setter.js
index 3f2398c46a..bff5ad0e63 100644
--- a/frappe/custom/doctype/property_setter/property_setter.js
+++ b/frappe/custom/doctype/property_setter/property_setter.js
@@ -1,11 +1,10 @@
 // Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
-// MIT License. See license.txt 
+// MIT License. See license.txt
 
-$.extend(cur_frm.cscript, {
-	validate: function(doc) {
-		if(doc.property_type=='Check' && !in_list(['0','1'], doc.value)) {
-			frappe.msgprint(__('Value for a check field can be either 0 or 1'));
-			frappe.validated = false;
+frappe.ui.form.on('Property Setter', {
+	validate: function(frm) {
+		if(frm.doc.property_type=='Check' && !in_list(['0','1'], frm.doc.value)) {
+			frappe.throw(__('Value for a check field can be either 0 or 1'));
 		}
 	}
-})
+});
diff --git a/frappe/email/doctype/newsletter/newsletter.js b/frappe/email/doctype/newsletter/newsletter.js
index 48e29db048..7bf0ae6b9a 100644
--- a/frappe/email/doctype/newsletter/newsletter.js
+++ b/frappe/email/doctype/newsletter/newsletter.js
@@ -1,58 +1,59 @@
 // Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
 // License: GNU General Public License v3. See license.txt
-/* globals erpnext */
 
-cur_frm.cscript.refresh = function(doc) {
-	if(window.erpnext) erpnext.toggle_naming_series();
-	if(!doc.__islocal && !cint(doc.email_sent) && !doc.__unsaved
-			&& in_list(frappe.boot.user.can_write, doc.doctype)) {
-		cur_frm.add_custom_button(__('Send'), function() {
-			return $c_obj(doc, 'send_emails', '', function(r) {
-				cur_frm.refresh();
-			});
-		}, "fa fa-play", "btn-success");
-	}
+frappe.ui.form.on('Newsletter', {
+	refresh(frm) {
+		let doc = frm.doc;
+		if(!doc.__islocal && !cint(doc.email_sent) && !doc.__unsaved
+				&& in_list(frappe.boot.user.can_write, doc.doctype)) {
+			frm.add_custom_button(__('Send'), function() {
+				frm.call('send_emails').then(() => {
+					frm.refresh();
+				});
+			}, "fa fa-play", "btn-success");
+		}
 
-	cur_frm.cscript.setup_dashboard();
+		frm.events.setup_dashboard(frm);
 
-	if(doc.__islocal && !doc.send_from) {
-		cur_frm.set_value("send_from",
-			repl("%(fullname)s <%(email)s>", frappe.user_info(doc.owner)));
-	}
-}
+		if(doc.__islocal && !doc.send_from) {
+			let { fullname, email } = frappe.user_info(doc.owner);
+			frm.set_value('send_from', `${fullname} <${email}>`);
+		}
+	},
 
-cur_frm.cscript.setup_dashboard = function() {
-	if(!cur_frm.doc.__islocal && cint(cur_frm.doc.email_sent)
-		&& cur_frm.doc.__onload && cur_frm.doc.__onload.status_count) {
-		var stat = cur_frm.doc.__onload.status_count;
-		var total = cur_frm.doc.scheduled_to_send;
-		if(total) {
-			$.each(stat, function(k, v) {
-				stat[k] = flt(v * 100 / total, 2) + '%';
-			});
+	setup_dashboard(frm) {
+		if(!frm.doc.__islocal && cint(frm.doc.email_sent)
+			&& frm.doc.__onload && frm.doc.__onload.status_count) {
+			var stat = frm.doc.__onload.status_count;
+			var total = frm.doc.scheduled_to_send;
+			if(total) {
+				$.each(stat, function(k, v) {
+					stat[k] = flt(v * 100 / total, 2) + '%';
+				});
 
-			cur_frm.dashboard.add_progress("Status", [
-				{
-					title: stat["Not Sent"] + " Queued",
-					width: stat["Not Sent"],
-					progress_class: "progress-bar-info"
-				},
-				{
-					title: stat["Sent"] + " Sent",
-					width: stat["Sent"],
-					progress_class: "progress-bar-success"
-				},
-				{
-					title: stat["Sending"] + " Sending",
-					width: stat["Sending"],
-					progress_class: "progress-bar-warning"
-				},
-				{
-					title: stat["Error"] + "% Error",
-					width: stat["Error"],
-					progress_class: "progress-bar-danger"
-				}
-			]);
+				frm.dashboard.add_progress("Status", [
+					{
+						title: stat["Not Sent"] + " Queued",
+						width: stat["Not Sent"],
+						progress_class: "progress-bar-info"
+					},
+					{
+						title: stat["Sent"] + " Sent",
+						width: stat["Sent"],
+						progress_class: "progress-bar-success"
+					},
+					{
+						title: stat["Sending"] + " Sending",
+						width: stat["Sending"],
+						progress_class: "progress-bar-warning"
+					},
+					{
+						title: stat["Error"] + "% Error",
+						width: stat["Error"],
+						progress_class: "progress-bar-danger"
+					}
+				]);
+			}
 		}
 	}
-}
\ No newline at end of file
+});
diff --git a/frappe/geo/doctype/currency/currency.js b/frappe/geo/doctype/currency/currency.js
index cb2202abff..af2d6ebc4e 100644
--- a/frappe/geo/doctype/currency/currency.js
+++ b/frappe/geo/doctype/currency/currency.js
@@ -1,9 +1,11 @@
 // Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
 // License: See license.txt
 
-cur_frm.cscript.refresh = function(doc) {
-	cur_frm.set_intro("");
-	if(!cur_frm.doc.enabled) {
-		cur_frm.set_intro(__("This Currency is disabled. Enable to use in transactions"))
+frappe.ui.form.on('Currency', {
+	refresh(frm) {
+		frm.set_intro("");
+		if(!frm.doc.enabled) {
+			frm.set_intro(__("This Currency is disabled. Enable to use in transactions"));
+		}
 	}
-}
\ No newline at end of file
+});
diff --git a/frappe/public/js/frappe/misc/address_and_contact.js b/frappe/public/js/frappe/misc/address_and_contact.js
index 4bdc9bb9e6..3b05e5f0bb 100644
--- a/frappe/public/js/frappe/misc/address_and_contact.js
+++ b/frappe/public/js/frappe/misc/address_and_contact.js
@@ -11,7 +11,7 @@ $.extend(frappe.contacts, {
 		if(frm.fields_dict['address_html'] && "addr_list" in frm.doc.__onload) {
 			$(frm.fields_dict['address_html'].wrapper)
 				.html(frappe.render_template("address_list",
-					cur_frm.doc.__onload))
+					frm.doc.__onload))
 				.find(".btn-address").on("click", function() {
 					frappe.new_doc("Address");
 				});
@@ -21,7 +21,7 @@ $.extend(frappe.contacts, {
 		if(frm.fields_dict['contact_html'] && "contact_list" in frm.doc.__onload) {
 			$(frm.fields_dict['contact_html'].wrapper)
 				.html(frappe.render_template("contact_list",
-					cur_frm.doc.__onload))
+					frm.doc.__onload))
 				.find(".btn-contact").on("click", function() {
 					frappe.new_doc("Contact");
 				}