javascript 在 Select2 中，formatSelection 和 formatResult 是如何工作的？

In Select2, how do formatSelection and formatResult work?

提问by GBC

I'm using Select2 (http://ivaynberg.github.io/select2/) to have an input field of a form (let's say its id is topics) to be in tagging mode, with the list of existing tags (allowing the user to choose some of these tags, or to create new ones) being provided by an array of remote data.

我正在使用 Select2 ( http://ivaynberg.github.io/select2/) 使表单的输入字段（假设它的 id 是topics）处于标记模式，并带有现有标记列表（允许用户选择其中一些标签，或创建新标签）由远程数据数组提供。

The array (list.json) is correctly got from my server. It has idand textfields, since Select2 seems to need these fields. It thus looks like this:

数组 ( list.json) 是从我的服务器正确获取的。它有id和text字段，因为 Select2 似乎需要这些字段。因此它看起来像这样：

[ { id: 'tag1', text: 'tag1' }, { id: 'tag2', text: 'tag2' }, { id: 'tag3', text: 'tag3' } ]

The script in the HTML file looks like this:

HTML 文件中的脚本如下所示：

$("#topics").select2({
    ajax: { 
        url: "/mypath/list.json",
        dataType: 'json',
        results: function (data, page) { 
        return {results: data};
        },   
    }
});

But the input field is showing "searching", which means it's not able to use the array for tagging support.

但是输入字段显示“正在搜索”，这意味着它无法使用数组进行标记支持。

In the script with Select2, I know I have to define formatSelectionand formatInput, but I'm not getting how they should work in my case, although I have read the Select2 documentation... Thank you for your help!

在带有 Select2 的脚本中，我知道我必须定义formatSelection和formatInput，但是我不知道它们在我的情况下应该如何工作，尽管我已经阅读了 Select2 文档...谢谢您的帮助！

回答by Vinz243

You need to add the function like explained here. In your example:

您需要添加此处解释的功能。在你的例子中：

function format(state) {

    return state.text;
}