javascript - JS 将数组值合并为一个值

Question

我有这个对象

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

如何简化为:

b = ['animals','dogcatpenguin']

Answer 1

像这样

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

var key, b = [];

for (key in a) {
  b.push(Array.isArray(a[key]) ? a[key].join('') : a[key]);
}

console.log(b);

或者您可以使用 Object.keys与 .map

var a = {
    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);