Javascript对象，访问相关键

Question

我有以下 Javascript 对象:

var icecreams = [{
    name: 'vanilla',
    price: 10,
    rating: 3
}, {
    name: 'chocolate',
    price: 4,
    rating: 8
}, {
    name: 'banana',
    price: 1,
    rating: 1
}, {
    name: 'greentea',
    price: 5,
    rating: 7
}, {
    name: 'moosetracks',
    price: 6,
    rating: 2
}, ];

我需要访问对象每个部分中的“相关属性”(不确定确切的术语)。例如，如果我的名字是“vanilla”，我需要访问 10 的“价格”和 3 的“评级”。有没有办法在不改变对象结构的情况下做到这一点？可能使用 this？

Answer 1

您可以使用 Array.prototype.filter()

The filter() method creates a new array with all elements that pass the test implemented by the provided function.

var vanilla = icecreams.filter(function(o){
    return o.name === 'vanilla'
});
//As filter return's an array you need to use index thus [0] to access first element of array
console.log(vanilla[0].price);
console.log(vanilla[0].rating);