如何将变量访问到函数外部声明的函数中

Question

restData = currentNode.Restdata;
chain = {
    name: currentNode.name,
    body: function (job, cb) {

        var client = restify.createClient({
            url : restData.URL
        });

        switch (restData.Type) {
            case 'GET': 
                return client.get('/​​​', function (err, req, res, obj) {
                    if (err) {
                        return cb(err.name + ': ' + err.body.message);
                    } else {
                        return cb(null, 'Data found');
                    }
                });
                break;

            default:
                break;
        }                    
    }
};

在上面的例子中，我无法将restData变量访问到body：function（）{}。任何人都可以帮我解决这个问题，我可以访问bodyData到body函数。

让我举个例子：

这是我当前的json对象：

var inputJson = {
    "nodes": [{
            "name": "Fetch Ticket from google",
            "id": 0,
            "x": 0,
            "y": 0,
            "width": 350,
            "nodetype": "restclient",
            "Restdata": {
                "Type": "GET",
                "URL": "https://google.com",
                "authorization": "OAuth2",
                "authparams": {
                    "accessToken": "xxxxxxx"
                },
                "body": [{
                    "start": "&&last_run()",
                    "end": "&&now()"
                }]
            },
            "outputConnectors": [{
                "name": "A"
            }]
        }
    ]
};

现在，我想通过动态将此json对象转换为另一种json对象格式，如下所示：

{
    name: "Sample Workflow",
    chain: [
        {
            name: "A Task",
            timeout: 30,
            retry: 2,
            body: function (job, cb) {
                var client = restify.createClient({
                    url : "https://google.com"
                });
                return client.get('/​​​', function (err, req, res, obj) {
                    if (err) {
                        return cb(err.name + ': ' + err.body.message);
                    } else {
                        return cb(null, 'Data found');
                    }
                });
            },
            fallback: function (err, job, cb) {
                job.the_err = err;
                return cb(null);
            }
        }
    ],
    timeout: 300,
    onError: [{
        name: "Try another solution",
        body: function (job, cb) {
            cb("bhai bhul chhe kaik");
        }
    }]
};

而且，我是这样做的：

var workflowChains = [];
var finalWorkflow = {
    name: "Workflow 1",
    chain: workflowChains,
    timeout: 300,
    onError: []
};

var inputNodes = inputJson.nodes;
var inputConnections = inputJson.connections;
for (var i = 0; i < inputNodes.length; i++) {
    var currentNode = inputNodes[i];
    var currentConnecter = inputConnections[i];  
    restData = currentNode.Restdata;
    chain = {
        name: currentNode.name,
        body: function (job, cb) {

            var client = restify.createClient({
                url : restData.URL
            });

            switch (restData.Type) {
                case 'GET': 
                    return client.get('/​​​', function (err, req, res, obj) {
                        if (err) {
                            return cb(err.name + ': ' + err.body.message);
                        } else {
                            return cb(null, 'Data found');
                        }
                    });
                    break;

                default:
                    break;
            }                    
        }
    };
    workflowChains.push(chain);
}

并且，在这种情况下，我如何将https://google.com分配给

中的网址

var client = restify.createClient({
    url : restData.URL
});