javascript - 下划线使用另一个数组过滤数组对象

Question

如何从数组 b 中获取特定属性。那些要过滤的属性在数组a中。

有没有更简单的方法来使用下划线。

var a = [{
  name: "code"
}, {
  name: "barcode"
}, { 
  name: "status",
  type: "button"
}];

var b = [{
  id: 1,
  code: 10,
  barcode: "121212",
  status: "success",
  amount: "10",
  available: true
}, {
  id: 1,
  code: 10,
  barcode: "121212",
  status: "success",
  amount: "10",
  available: true
}];

现在如果使用下划线我怎样才能得到下面的结果

var c = [{
  code: 10,
  barcode: "121212",
  status: "success"
}, {
  code: 10,
  barcode: "121212",
  status: "success"
}];

Answer 1

var filters = _.pluck(a, 'name');

var c = _.map(b, function(el) {
    return _.pick(el, filters);
});