javascript - JS Combine array values into one single value -


i have object

a = {key:'animals',      options: ['dog','cat','penguin']}

how can simplify this:

b = ['animals','dogcatpenguin']

like 

var = {    key: 'animals',    options: ['dog','cat','penguin']  };    var key, b = [];    (key in a) {    b.push(array.isarray(a[key]) ? a[key].join('') : a[key]);  }    console.log(b);

or can use object.keys .map

var = {      key: 'animals',      options: ['dog','cat','penguin']  };    var b = object.keys(a).map(function (key) {      return array.isarray(a[key]) ? a[key].join('') : a[key];       });    console.log(b);


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