title: check if key exists in object with lodash
body: <p>I need help with lodash cause i dont understand functional programming and lodash is very helpfull with object/arrays operations.</p>
  
  <p>I need to search objects inside object and return true if key exists. I've setup a jsfiddle. Apreciate your help.</p>
  
  <pre><code>    var dependsOn={
        "Cadastro": {
          "RHID": "RHID"
        },
        "Agregados":{
          "CD_DOC":"CD_DOC"
        }
        "Documentos":{
          "RHID":"CD_DOC"
        }
      }
      var field='RHID'
  
  alert(_.contains(_.keys(dependsOn), field))
  </code></pre>
  
  <p><a href="https://jsfiddle.net/88gwp87k/" rel="noreferrer">https://jsfiddle.net/88gwp87k/</a></p>