diff --git a/index.js b/index.js
index a368e2a..6697765 100644
--- a/index.js
+++ b/index.js
@@ -104,6 +104,25 @@ function onReady () {
             app.quit();
             break;
 
+            case consts.eventNames.appExecuteJavaScript:
+                (async function () {
+                    let evalAsync = (ev, json) => {
+                        return new Promise((resolve, reject) => {
+                            eval(ev);
+                        });
+                    };
+                    try {
+                        client.write(json.targetID, consts.eventNames.appExecuteJavaScriptCallback, {
+                            reply: await evalAsync(json.code, json)
+                        });
+                    } catch (error) {
+                        client.write(json.targetID, consts.eventNames.appExecuteJavaScriptCallback, {
+                            error: error.toString()
+                        });
+                    }
+                }());
+                break;
+
             // Dock
             case consts.eventNames.dockCmdBounce:
             let id = 0;
diff --git a/src/consts.js b/src/consts.js
index 92e7d0f..8185f28 100644
--- a/src/consts.js
+++ b/src/consts.js
@@ -9,6 +9,8 @@ module.exports = {
         appCmdQuit: "app.cmd.quit",
         appEventReady: "app.event.ready",
         appEventSecondInstance: "app.event.second.instance",
+        appExecuteJavaScript: "app.execute.javascript",
+        appExecuteJavaScriptCallback: "app.execute.javascript.callback",
         displayEventAdded: "display.event.added",
         displayEventMetricsChanged: "display.event.metrics.changed",
         displayEventRemoved: "display.event.removed",