diff --git a/src/js.rs b/src/js.rs
index 465edac3..7d957f74 100644
--- a/src/js.rs
+++ b/src/js.rs
@@ -49,8 +49,8 @@ extern "C" {
     #[wasm_bindgen(catch, js_name = decodeURI)]
     pub fn decode_uri(encoded: &str) -> Result<JsString, JsValue>;
 
-    /// The decodeURIComponent() function decodes a Uniform Resource Identifier (URI)
-    /// component previously created by encodeURIComponent or by a similar routine.
+    /// The decodeURIComponent() function decodes a Uniform Resource Identifier (URI) component
+    /// previously created by encodeURIComponent or by a similar routine.
     /// 
     /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/decodeURIComponent
     #[wasm_bindgen(catch, js_name = decodeURIComponent)]
@@ -66,6 +66,15 @@ extern "C" {
     #[wasm_bindgen(js_name = encodeURI)]
     pub fn encode_uri(decoded: &str) -> JsString;
 
+    /// The encodeURIComponent() function encodes a Uniform Resource Identifier (URI) component
+    /// by replacing each instance of certain characters by one, two, three, or four escape sequences
+    /// representing the UTF-8 encoding of the character
+    /// (will only be four escape sequences for characters composed of two "surrogate" characters).
+    /// 
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURIComponent
+    #[wasm_bindgen(js_name = encodeURIComponent)]
+    pub fn encode_uri_component(decoded: &str) -> JsString;
+
     /// The `eval()` function evaluates JavaScript code represented as a string.
     ///
     /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval
diff --git a/tests/all/js_globals/mod.rs b/tests/all/js_globals/mod.rs
index b365c6ce..632898e0 100644
--- a/tests/all/js_globals/mod.rs
+++ b/tests/all/js_globals/mod.rs
@@ -96,6 +96,28 @@ fn encode_uri() {
         .test();
 }
 
+#[test]
+fn encode_uri_component() {
+    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 test() {
+                let x = js::encode_uri_component("?x=шеллы");
+                assert_eq!(String::from(x), "%3Fx%3D%D1%88%D0%B5%D0%BB%D0%BB%D1%8B");
+            }
+        "#,
+        )
+        .test();
+}
+
 #[test]
 fn eval() {
     project()