como percorrer um objeto js

var obj = {
  "column01": "Coluna 01",
  "column02": "Coluna 02"
}

Object.keys(obj).forEach(function(item){
 console.log(item + " = " + obj[item])
})

for (var property in obj){
  console.log(property + " = " + obj[property]);
}// Requiring the lodash library 
// console:  npm i --save lodash
const _ = require("lodash")

// Use of _.forEach() method

_.forEach({ 'a': 1, 'b': 2 }, function(value, key) {
  console.log(key)
})