$("#myInput").autocomplete({
  source: function(request, response) {
    // 你的数据获取逻辑
  }
});

// 作为函数
source: function(request, response) {
  $.get("/search", { term: request.term }, response);
}

// 作为数组
source: ["Apple", "Banana", "Cherry"]

// 作为 URL
source: "/search"

$("#myInput").autocomplete({
  source: function(request, response) {
    var self = this; // 保存 this 引用
    $.get("/search", { term: request.term }, function(data) {
      // 在这里可以使用 self
      response(data);
    });
  }
});

$(function() {
  $("#autocomplete").autocomplete({
    minLength: 2,
    source: function(request, response) {
      // 模拟异步数据获取
      setTimeout(function() {
        var suggestions = [
          "ActionScript",
          "AppleScript",
          "Asp",
          "BASIC",
          "C",
          "C++"
        ].filter(function(item) {
          return item.toLowerCase().indexOf(request.term.toLowerCase()) === 0;
        });
        response(suggestions);
      }, 500);
    }
  });
});