diff --git a/webidl/ecmascript-binding/es-exceptions/DOMException-constructor-behavior.any.js b/webidl/ecmascript-binding/es-exceptions/DOMException-constructor-behavior.any.js
index e9917af2287490..597ae861e48568 100644
--- a/webidl/ecmascript-binding/es-exceptions/DOMException-constructor-behavior.any.js
+++ b/webidl/ecmascript-binding/es-exceptions/DOMException-constructor-behavior.any.js
@@ -6,6 +6,8 @@ test(function() {
                 "Not passing a name should end up with 'Error' as the name");
   assert_equals(ex.message, "",
                 "Not passing a message should end up with empty string as the message");
+  assert_equals(ex.cause, undefined,
+                "Not passing a cause should end up with undefined as the cause");
 }, 'new DOMException()');
 
 test(function() {
@@ -14,6 +16,8 @@ test(function() {
                "The name property should be inherited");
   assert_false(ex.hasOwnProperty("message"),
                "The message property should be inherited");
+  assert_false(ex.hasOwnProperty("cause"),
+               "The cause property should be inherited");
 }, 'new DOMException(): inherited-ness');
 
 test(function() {
@@ -22,6 +26,8 @@ test(function() {
                 "Not passing a name should end up with 'Error' as the name");
   assert_equals(ex.message, "null",
                 "Passing null as message should end up with stringified 'null' as the message");
+  assert_equals(ex.cause, undefined,
+                "Not passing a cause should end up with undefined as the cause");
 }, 'new DOMException(null)');
 
 test(function() {
@@ -30,6 +36,8 @@ test(function() {
                 "Not passing a name should end up with 'Error' as the name");
   assert_equals(ex.message, "",
                 "Not passing a message should end up with empty string as the message");
+  assert_equals(ex.cause, undefined,
+                "Not passing a cause should end up with undefined as the cause");
 }, 'new DOMException(undefined)');
 
 test(function() {
@@ -38,6 +46,8 @@ test(function() {
                "The name property should be inherited");
   assert_false(ex.hasOwnProperty("message"),
                "The message property should be inherited");
+  assert_false(ex.hasOwnProperty("cause"),
+               "The cause property should be inherited");
 }, 'new DOMException(undefined): inherited-ness');
 
 test(function() {
@@ -45,6 +55,8 @@ test(function() {
   assert_equals(ex.name, "Error",
                 "Not passing a name should still end up with 'Error' as the name");
   assert_equals(ex.message, "foo", "Should be using passed-in message");
+  assert_equals(ex.cause, undefined,
+                "Not passing a cause should end up with undefined as the cause");
 }, 'new DOMException("foo")');
 
 test(function() {
@@ -53,6 +65,8 @@ test(function() {
                "The name property should be inherited");
   assert_false(ex.hasOwnProperty("message"),
               "The message property should be inherited");
+  assert_false(ex.hasOwnProperty("cause"),
+              "The cause property should be inherited");
 }, 'new DOMException("foo"): inherited-ness');
 
 test(function() {
@@ -60,6 +74,8 @@ test(function() {
   assert_equals(ex.name, "Error",
                 "Passing undefined for name should end up with 'Error' as the name");
   assert_equals(ex.message, "bar", "Should still be using passed-in message");
+  assert_equals(ex.cause, undefined,
+                "Not passing a cause should end up with undefined as the cause");
 }, 'new DOMException("bar", undefined)');
 
 test(function() {
@@ -68,6 +84,8 @@ test(function() {
   assert_equals(ex.message, "bar", "Should still be using passed-in message");
   assert_equals(ex.code, DOMException.NOT_SUPPORTED_ERR,
                 "Should have the right exception code");
+  assert_equals(ex.cause, undefined,
+                "Not passing a cause should end up with undefined as the cause");
 }, 'new DOMException("bar", "NotSupportedError")');
 
 test(function() {
@@ -76,6 +94,8 @@ test(function() {
               "The name property should be inherited");
   assert_false(ex.hasOwnProperty("message"),
               "The message property should be inherited");
+  assert_false(ex.hasOwnProperty("cause"),
+              "The cause property should be inherited");
 }, 'new DOMException("bar", "NotSupportedError"): inherited-ness');
 
 test(function() {
@@ -84,8 +104,86 @@ test(function() {
   assert_equals(ex.message, "bar", "Should still be using passed-in message");
   assert_equals(ex.code, 0,
                 "Should have 0 for code for a name not in the exception names table");
+  assert_equals(ex.cause, undefined,
+                "Not passing a cause should end up with undefined as the cause");
 }, 'new DOMException("bar", "foo")');
 
+test(function() {
+  var ex = new DOMException("bar", {});
+  assert_equals(ex.name, "Error",
+                "Passing empty dictionary for options should end up with 'Error' as the name");
+  assert_equals(ex.message, "bar", "Should still be using passed-in message");
+  assert_equals(ex.cause, undefined,
+                "Not passing a cause should end up with undefined as the cause");
+}, 'new DOMException("bar", {})');
+
+test(function() {
+  var ex = new DOMException("bar", {});
+  assert_false(ex.hasOwnProperty("name"),
+               "The name property should be inherited");
+  assert_false(ex.hasOwnProperty("message"),
+               "The message property should be inherited");
+  assert_false(ex.hasOwnProperty("cause"),
+               "The cause property should be inherited");
+}, 'new DOMException("bar", {}): inherited-ness');
+
+test(function() {
+  var ex = new DOMException("bar", { name: "NotSupportedError" });
+  assert_equals(ex.name, "NotSupportedError", "Should be using the passed-in name");
+  assert_equals(ex.message, "bar", "Should still be using passed-in message");
+  assert_equals(ex.code, DOMException.NOT_SUPPORTED_ERR,
+                "Should have the right exception code");
+  assert_equals(ex.cause, undefined,
+                "Not passing a cause should end up with undefined as the cause");
+}, 'new DOMException("bar", { name: "NotSupportedError" })');
+
+test(function() {
+  var ex = new DOMException("bar", { name: "NotSupportedError" });
+  assert_false(ex.hasOwnProperty("name"),
+               "The name property should be inherited");
+  assert_false(ex.hasOwnProperty("message"),
+               "The message property should be inherited");
+  assert_false(ex.hasOwnProperty("cause"),
+               "The cause property should be inherited");
+}, 'new DOMException("bar", { name: "NotSupportedError" }): inherited-ness');
+
+test(function() {
+  var ex = new DOMException("bar", { cause: "foo" });
+  assert_equals(ex.name, "Error",
+                "Not passing a name should end up with 'Error' as the name");
+  assert_equals(ex.message, "bar", "Should still be using passed-in message");
+  assert_equals(ex.cause, "foo", "Should be using the passed-in cause");
+}, 'new DOMException("bar", { cause: "foo" })');
+
+test(function() {
+  var ex = new DOMException("bar", { cause: "foo" });
+  assert_false(ex.hasOwnProperty("name"),
+               "The name property should be inherited");
+  assert_false(ex.hasOwnProperty("message"),
+               "The message property should be inherited");
+  assert_false(ex.hasOwnProperty("cause"),
+               "The cause property should be inherited");
+}, 'new DOMException("bar", { cause: "foo" }): inherited-ness');
+
+test(function() {
+  var ex = new DOMException("bar", { name: "NotSupportedError", cause: "foo" });
+  assert_equals(ex.name, "NotSupportedError", "Should be using the passed-in name");
+  assert_equals(ex.message, "bar", "Should still be using passed-in message");
+  assert_equals(ex.code, DOMException.NOT_SUPPORTED_ERR,
+                "Should have the right exception code");
+  assert_equals(ex.cause, "foo", "Should be using the passed-in cause");
+}, 'new DOMException("bar", { name: "NotSupportedError", cause: "foo" })');
+
+test(function() {
+  var ex = new DOMException("bar", { name: "NotSupportedError", cause: "foo" });
+  assert_false(ex.hasOwnProperty("name"),
+               "The name property should be inherited");
+  assert_false(ex.hasOwnProperty("message"),
+               "The message property should be inherited");
+  assert_false(ex.hasOwnProperty("cause"),
+               "The cause property should be inherited");
+}, 'new DOMException("bar", { name: "NotSupportedError", cause: "foo" }): inherited-ness');
+
 [
   {name: "IndexSizeError", code: 1},
   {name: "HierarchyRequestError", code: 3},
diff --git a/webidl/ecmascript-binding/es-exceptions/DOMException-custom-bindings.any.js b/webidl/ecmascript-binding/es-exceptions/DOMException-custom-bindings.any.js
index cd4e5b6341948c..13cfaa35ea8f9a 100644
--- a/webidl/ecmascript-binding/es-exceptions/DOMException-custom-bindings.any.js
+++ b/webidl/ecmascript-binding/es-exceptions/DOMException-custom-bindings.any.js
@@ -46,6 +46,23 @@ test(() => {
   assert_throws_js(TypeError, () => getter.apply({}));
 }, "name getter performs brand checks (i.e. is not [LegacyLenientThis])");
 
+test(() => {
+  const e = new DOMException("message", { cause: "cause" });
+  assert_false(e.hasOwnProperty("cause"), "property is not own");
+
+  const propDesc = Object.getOwnPropertyDescriptor(DOMException.prototype, "cause");
+  assert_equals(typeof propDesc.get, "function", "property descriptor is a getter");
+  assert_equals(propDesc.set, undefined, "property descriptor is not a setter");
+  assert_true(propDesc.enumerable, "property descriptor enumerable");
+  assert_true(propDesc.configurable, "property descriptor configurable");
+}, "cause property descriptor");
+
+test(() => {
+  const getter = Object.getOwnPropertyDescriptor(DOMException.prototype, "cause").get;
+
+  assert_throws_js(TypeError, () => getter.apply({}));
+}, "cause getter performs brand checks (i.e. is not [LegacyLenientThis])");
+
 test(() => {
   const e = new DOMException("message", "name");
   assert_false(e.hasOwnProperty("code"), "property is not own");
diff --git a/webidl/idlharness.any.js b/webidl/idlharness.any.js
index 3c662ba8e63f2f..b361f76f0103f9 100644
--- a/webidl/idlharness.any.js
+++ b/webidl/idlharness.any.js
@@ -10,7 +10,11 @@ idl_test(
     idl_array.add_objects({
       DOMException: ['new DOMException()',
                      'new DOMException("my message")',
-                     'new DOMException("my message", "myName")']
+                     'new DOMException("my message", "myName")',
+                     'new DOMException("my message", {})',
+                     'new DOMException("my message", { name: "myName" })',
+                     'new DOMException("my message", { cause: "myCause" })',
+                     'new DOMException("my message", { name: "myName", cause: "myCause" })']
     });
   }
 );