Property access in Javascript can be problematic - especially when dealing with nested Objects and Arrays. Doing it manually and in a safe manner requires tons of boilerplate inside conditionals and results in a defensive style of coding. In this lesson we look at why this is a problem & how to overcome it using the get method from the popular utility library Lodash

 

var data = {  "response": {    "body": {      "deviceDetail": {        "deviceDetails": [          {            "handsetIMEI": 7356383,            "handsetDateLastUsed": "2019-04-20T01:02:03.812Z",          },          {            "handsetIMEI": 34534,            "handsetDateLastUsed": "2019-04-20T01:02:03.812Z",          }        ]      }    }  }}const ns = ['response', 'body', 'deviceDetail', 'deviceDetails'];const handsetIMEI = _.get(data, ns.concat([0, 'handsetIMEI']))console.log(handsetIMEI)