两数组通过id关联，怎样通过js把他们合并成一个数组？

Question

例如 a = [{id:1,age:10},{id:2,age:20},{id:3,age:30}]  b = [{id:3,sex:'男'},{id:1,sex:'男'},{id:2,sex:'女'}]合并后c = [{id:1,age:10,sex:'男'},{id:2,age:20,sex:'女'},{id:3,age:30,sex:'男'}]

Answer 1

<script>

  const a = [{id:1,age:10},{id:2,age:20},{id:3,age:30}];

  const b = [{id:3,sex:'男'},{id:1,sex:'男'},{id:2,sex:'女'}];

  let c = [];

  for(let u of a) {

    const temp = b.filter(i => i.id === u.id)[0];

    c.push({...u, ...temp});

  }

  console.log(c);

</script>