如何将JSValueRef从Objective-C转换为JavaScript变量

使用JavaScriptCore，如果我在Objective-C中有一个NSString，如下所示：

NSString *objcName = @"Kristof";

和一个名为jsContextRef的JSGlobalContextRef上下文

如何将objcName的Objective-C值转换为jsContextRef中的命名JavaScript变量？我的思路是：

JSStringRef jsNameRef = JSStringCreateWithUTF8CString([objcName UTF8String]);
JSValueRef jsValueRef = JSValueMakeString(jsContextRef, jsNameRef);

假设变量名为“jsName”。我还需要几个电话（甚至一个电话），比如：

// This part is pseudo-code for which I would like to have proper code:
JSValueStoreInVarWithName(jsContextRef,"jsName",jsValueRef);

因此，当在Objective-C中这样调用时，该JavaScript最终将正确计算：

NSString *lJavaScriptScript = @"var jsUppercaseName = jsName.toUpperCase();";
JSStringRef scriptJS = JSStringCreateWithUTF8CString([lJavaScriptScript UTF8String]);
JSValueRef exception = NULL;
JSValueRef result = JSEvaluateScript(jsContextRef, scriptJS, NULL, NULL, 0, &exception);

我在JSWrappers.m文件中找到了答案。它有以下方法：

/* -addGlobalStringProperty:withValue: adds a string with the given name to the
 global object of the JavaScriptContext.  After this call, scripts running in
 the context will be able to access the string using the name. */
- (void)addGlobalStringProperty:(NSString *)name withValue:(NSString *)theValue {
    /* convert the name to a JavaScript string */
    JSStringRef propertyName = [name jsStringValue];
    if ( propertyName != NULL ) {
        /* convert the property value into a JavaScript string */
        JSStringRef propertyValue = [theValue jsStringValue];
        if ( propertyValue != NULL ) {            
            /* copy the property value into the JavaScript context */
            JSValueRef valueInContext = JSValueMakeString( [self JSContext], propertyValue );
            if ( valueInContext != NULL ) {                
                /* add the property into the context's global object */
                JSObjectSetProperty( [self JSContext], JSContextGetGlobalObject( [self JSContext] ),
                                propertyName, valueInContext, kJSPropertyAttributeReadOnly, NULL );
            }
            /* done with our reference to the property value */
            JSStringRelease( propertyValue );
        }
        /* done with our reference to the property name */
        JSStringRelease( propertyName );
    }
}

这正是我需要的。jsStringValue方法的代码在同一项目的NSStringWrappers.m中，是：

/* return a new JavaScriptCore string value for the string */
- (JSStringRef)jsStringValue {
    return JSStringCreateWithCFString( (__bridge CFStringRef) self );
}

这似乎奏效了