JavaScript 数组合并：根据 ID 键值组合相同元素的数组

$(function() { var daanArray = [];

$('.xuanze').click(function(e) { $(this).toggleClass('redBorder');

var id = $(this).attr('i');
var daan = $(this).attr('value');

var foundIndex = daanArray.findIndex(function(element) {
  return element.id === id;
});

if (foundIndex !== -1) {
  daanArray[foundIndex].daan.push(daan);
} else {
  daanArray.push({ id: id, daan: [daan] });
}

console.log(daanArray);

$.ajax({
  type: 'POST',
  url: '{:url("Dati/getAnswer")}',
  data: { daan: daanArray },
  dataType: 'json',
  success: function(msg) {
    console.log('成功');
  }
});

}); });