在jQueryUI自动完成列表中选择一个项目时，如何防止输入元素更新? [英] How to prevent update of input element when an item is selected in a jQueryUI autocomplete list?

问题描述

我有以下jQueryUI自动完成功能

I have the following jQueryUI autocomplete

$('#clientSearch').autocomplete({
  source: function (request, response) {

    var url = window.apiUrl + '/clients?searchText=' + request.term;

    var request = $.ajax({
      url: url,
      type: 'GET',
      dataType: "json",
      cache: false,
      contentType: 'application/json; charset=utf-8'
    });

    request.done(function (clientList) {
      response($.map(clientList, function (client) {
        return {
          label: client.lastName + ', ' + client.firstInitial + '. ' + client.sex + '/' + client.age,
          value: client.id
        }
      }));
    });

    request.fail(function (jqXHR, textStatus, errorThrown) {
      response(
      {
        label: 'Error retrieving clients',
        value: null
      }
      );
    });

  },
  minLength: 2,
  select: function (event, ui) {
    event.preventDefault();
    getClient(ui.item.value);
  }
});

在显示自动完成列表后，按下向下箭头以将焦点/突出显示移至项目#1，该item.value将显示在用户键入搜索条件的输入元素中.

After the autocomplete list is display when the down arrow is pressed to move focus/highlight to item #1 the item.value is displayed in the input element where the user typed the search criteria.

根据我的阅读，如上面的代码所示，在select事件中添加event.preventDefault()，应防止item.value插入到输入元素中.

From what I have read adding event.preventDefault() in the select event, as done in the code above, should prevent the item.value from being inserted into the input element.

但是，item.value仍在插入，并且在选择事件中的断点不会被选中，直到选中了突出显示的项目并按下ENTER键为止.

However, the item.value is still being inserted and a breakpoint in the select event is not hit until the highlighted item is "selected" w/ ENTER.

我希望原始搜索文本保留在输入元素中，因为突出显示在自动完成列表中的项目之间移动.

I would like the original search text to remain in the input element as the highlight is moved between the items in the autocomplete list.

推荐答案

使用 focus 事件:

focus: function (event, ui) {
    event.preventDefault();
}

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