How to remove properties from object using lodash?

Question

This is my object:

var obj = {
  "flag": false,
  "text": "good text",
  "someArray": [
    {
      "questionId": 11,
      "text": "qwe",
      "TypeId": "B",
      "source": "oooooo"
    },
    {
      "questionId": 12,
      "text": "zxc",
      "TypeId": "A",
      "source": "pppppp"
    },
    {
      "questionId": 13,
      "text": "asd",
      "TypeId": "D",
      "source": "cccccc"
    }
  ]
}

What I'm trying to do is remove from objects in someArray properties TypeId and source . How can I do this with lodash? I was trying using _.pick, but I don't know how can I use this inside someArray .

Answer 1

You want to use the opposite of _.pick , which is _.omit and return the objects without the given properties by mapping them with _.map

 var obj = { "flag": false, "text": "good text", "someArray": [{ "questionId": 11, "text": "qwe", "TypeId": "B", "source": "oooooo" }, { "questionId": 12, "text": "zxc", "TypeId": "A", "source": "pppppp" }, { "questionId": 13, "text": "asd", "TypeId": "D", "source": "cccccc" }] } obj.someArray = _.map(obj.someArray, o => _.omit(o, ['TypeId', 'source'])); console.log(obj) 

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