30秒学会 JavaScript 片段 – similarity

Returns an array of elements that appear in both arrays.

Use Array.prototype.filter() to remove values that are not part of values, determined using Array.prototype.includes().

代码片段

const similarity = (arr, values) => arr.filter(v => values.includes(v));

使用样例

similarity([1, 2, 3], [1, 2, 4]); // [1, 2]