diff --git a/src/js.rs b/src/js.rs
index b7fead95..8db2d1a1 100644
--- a/src/js.rs
+++ b/src/js.rs
@@ -738,6 +738,12 @@ extern "C" {
 extern "C" {
     pub type Number;
 
+    /// The Number.isInteger() method determines whether the passed value is an integer.
+    ///
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isInteger
+    #[wasm_bindgen(static_method_of = Number, js_name = isInteger)]
+    pub fn is_integer(object: &Object) -> bool;
+
     /// The `Number` JavaScript object is a wrapper object allowing
     /// you to work with numerical values. A `Number` object is
     /// created using the `Number()` constructor.
@@ -794,6 +800,13 @@ extern "C" {
 extern "C" {
     pub type Date;
 
+    /// The getDate() method returns the day of the month for the
+    /// specified date according to local time.
+    ///
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getDate
+    #[wasm_bindgen(method, js_name = getDate)]
+    pub fn get_date(this: &Date) -> Number;
+
     /// The getDay() method returns the day of the week for the specified date according to local time,
     /// where 0 represents Sunday. For the day of the month see getDate().
     ///
diff --git a/tests/all/js_globals/Date.rs b/tests/all/js_globals/Date.rs
index 740044f7..a0c4423a 100644
--- a/tests/all/js_globals/Date.rs
+++ b/tests/all/js_globals/Date.rs
@@ -2,6 +2,40 @@
 
 use super::project;
 
+#[test]
+fn get_date() {
+    project()
+        .file(
+            "src/lib.rs",
+            r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js::{Date, Number};
+
+            #[wasm_bindgen]
+            pub fn get_date(this: &Date) -> Number {
+                this.get_date()
+            }
+        "#,
+        )
+        .file(
+            "test.js",
+            r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                let date = new Date(1993, 6, 28, 14, 39, 7);
+
+                assert.equal(wasm.get_date(date), 28);
+            }
+        "#,
+        )
+        .test()
+}
+
 #[test]
 fn get_day() {
     project()
diff --git a/tests/all/js_globals/Number.rs b/tests/all/js_globals/Number.rs
index 4c06fc9e..f7d44dba 100644
--- a/tests/all/js_globals/Number.rs
+++ b/tests/all/js_globals/Number.rs
@@ -2,6 +2,33 @@
 
 use super::project;
 
+#[test]
+fn is_integer() {
+    project()
+        .file("src/lib.rs", r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn is_integer(obj: &js::Object) -> bool {
+                js::Number::is_integer(&obj)
+            }
+        "#)
+        .file("test.js", r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                assert.ok(wasm.is_integer(123));
+                assert.ok(!wasm.is_integer(123.45));
+            }
+        "#)
+        .test()
+}
+
 #[test]
 fn new() {
     project()