Getting JavaScript object key list

Question

I have a JavaScript object like

var obj = {
   key1: \'value1\',
   key2: \'value2\',
   key3: \'value3\',
   key4: \'value4\'
}

How can I

Answer 1

Using ES6, you can use forEach to iterate over the Keys of an Object. To get all the keys you can use Object.keys which returns all the keys in an Object

Object.keys(obj).forEach(function(keyValue, index, map) { 
  console.log(keyValue); 
});

Short hand of the above snippet would be, which only takes one parameter

Object.keys(obj).forEach(function(keyValue) { 
  console.log(keyValue); 
});