Resolving the variables in options nodejs

Question

Resolving the variables in options nodejs

Hi i make a client call to a hhtp get webservice using the http module

I pass options as a input to the function.Below is the code snippet

var headerKey="ddd"
options = {
             host: 10.0.0.0,
             port: 80,
             path:/pppp,
             headers: {
                 headerKey : 1
          }
        };

When i print options below is the output

options:-{"host":"10.0.0.0","port":80,"path":"/pppp","headers":{"headerKey":"1"}}

My issue is that the "headerkey" is not changing to ddd instead its passing the variable name as the parameter.(ie) I want the out put as below

{"host":"10.0.0.0","port":80,"path":"/pppp","headers":{"ddd":"1"}}

I am stuck here.Any help regarding this will be really helpful.

javascript
node.js
http

Answer 1

If you mean changing option's headerKey to ddd

var headerKey = 'ddd';
options = {...};
options.headers.headerKey = headerKey;

As far as I know, you can't rename a property in JS. You could add another property, and have it point to the same value as the previous:

options.headers[headerKey] = options.headers.headerKey;
delete options.headers.headerKey;

Answer 2

check out this working example

var headerKey="ddds"
 var options = {
         host: "10.0.0.0",
         port: "80",
         path:"/pppp",
headers: {}

};

options.headers[headerKey] = '1';

console.log(options);

console.log(options.headers);

To use a variable as a key in javascript you can use the array notation of the objects.