diff --git a/js-runtime/src/sandbox.ts b/js-runtime/src/sandbox.ts
index c6b19b7c..4247a4da 100644
--- a/js-runtime/src/sandbox.ts
+++ b/js-runtime/src/sandbox.ts
@@ -1,6 +1,6 @@
 /**
  * ``` TypeScript
- * // run in global scope
+ * // load script in global scope
  * Reflect.apply(
  * function(hego,context,require){
  *  //Script content
@@ -10,7 +10,7 @@
  * hego.obtainContext(id),
  * hego.__require__,
  * ])
- * 
+ * // load module in global scope
  * Reflect.apply(hego.registerModule,this,[
  *  moduleName,
  *  Reflect.apply(function(__module){
@@ -21,31 +21,101 @@
  * 
  * ```
  */
+declare function nativeRequire(moduleName: string): boolean
 
-export interface Context {
-    id: number
-    asyncCall(module: string, method: string, args: any, callbackId: string): any
+declare function nativeBridge(contextId: string, namespace: string, method: string, args?: any, callbackId?: string): boolean
+
+let __uniqueId__: number = 0
+
+function uniqueId(prefix: string) {
+    return `__${prefix}_${__uniqueId__++}__`;
 }
 
-const gContexts = new Map
-const gModules = new Map
+export function log(message: any) {
+    console.log(message)
+}
 
-export function obtainContext(id: string) {
+export function loge(message: any) {
+    console.error(message)
+}
+
+export function logw(message: any) {
+    console.warn(message)
+}
+
+export function jsCallResolve(contextId: string, callbackId: string, args?: any) {
+    const context = gContexts.get(contextId)
+    if (context === undefined) {
+        loge(`Cannot find context for context id:${contextId}`)
+        return
+    }
+    const callback = context.callbacks.get(callbackId)
+    if (callback === undefined) {
+        loge(`Cannot find call for context id:${contextId},callback id:${callbackId}`)
+        return
+    }
+    const argumentsList: any = []
+    for (let i = 2; i < arguments.length; i++) {
+        argumentsList.push(arguments[i])
+    }
+    Reflect.apply(callback.resolve, context, args)
+}
+
+export function jsCallReject(contextId: string, callbackId: string, args?: any) {
+    const context = gContexts.get(contextId)
+    if (context === undefined) {
+        loge(`Cannot find context for context id:${contextId}`)
+        return
+    }
+    const callback = context.callbacks.get(callbackId)
+    if (callback === undefined) {
+        loge(`Cannot find call for context id:${contextId},callback id:${callbackId}`)
+        return
+    }
+    const argumentsList: any = []
+    for (let i = 2; i < arguments.length; i++) {
+        argumentsList.push(arguments[i])
+    }
+    Reflect.apply(callback.reject, context, args)
+}
+
+export class Context {
+    id: string
+    callbacks: Map<string, { resolve: Function, reject: Function }> = new Map
+    constructor(id: string) {
+        this.id = id
+    }
+    callNative(namespace: string, method: string, args?: any): Promise<any> {
+        const callbackId = uniqueId('callback')
+
+        nativeBridge(this.id, namespace, method, args, callbackId)
+        return new Promise((resolve, reject) => {
+            this.callbacks.set(callbackId, {
+                resolve,
+                reject,
+            })
+        })
+    }
+}
+
+
+const gContexts: Map<string, Context> = new Map
+const gModules: Map<string, any> = new Map
+
+export function jsObtainContext(id: string) {
     if (gContexts.has(id)) {
         return gContexts.get(id)
     } else {
-        const context = { id }
+        const context: Context = new Context(id)
         gContexts.set(id, context)
         return context
     }
 }
 
-export function releaseContext(id: string) {
+export function jsReleaseContext(id: string) {
     gContexts.delete(id)
 }
 
-declare function nativeRequire(name: string): boolean
-
 export function __require__(name: string): any {
     if (gModules.has(name)) {
         return gModules.get(name)
@@ -57,6 +127,12 @@ export function __require__(name: string): any {
         }
     }
 }
-export function registerModule(name: string, moduleObject: any) {
+
+export function jsRegisterModule(name: string, moduleObject: any) {
     gModules.set(name, moduleObject)
-}
\ No newline at end of file
+}
+
+export function jsCall() {
+
+}
+