Twitter bootstrap 提前输入多个值? [英] Twitter bootstrap typeahead multiple values?

问题描述

我正在将 Twitter Bootstrap 与 Jquery 结合使用.我想对 textarea 使用 TYPEAHEAD 函数，我可以非常轻松地工作.但我也需要它来允许多选.

I'm using Twitter Bootstrap with Jquery. I want to use the TYPEAHEAD function for a textarea, which I got to work super easily. But I also need it to allow multiple selection.

我的意思是，在我从自动完成中选择一个单词后，它会将我带回 textarea 并留下一个额外的空格，然后如果我再次开始输入，它会让我再次输入.

By that I mean, after I selected one word from the autocomplete, it takes me back to textarea with an extra space afterwards and then if I start typing again, it offers me to do it again.

这是一个 JS 库:http://jsbin.com/ewubuk/1/edit(里面没什么特别的).

Here is a JS bin: http://jsbin.com/ewubuk/1/edit (Nothing special inside).

是否有一种简单的解决方案可以通过预先输入进行多项选择?如果是，如何?

提前致谢.

推荐答案

编辑 已经有一个关于这个的拉取:https://github.com/twitter/bootstrap/pull/2007

Edit There already was a pull about that : https://github.com/twitter/bootstrap/pull/2007

您可以通过使用预先输入的代理来实现所需的行为:Demo (jsfiddle)

You can approach the desired behavior by using a proxy for the typeahead : Demo (jsfiddle)

var $myTextarea = $('#myTextarea');

$('.typeahead').typeahead({
    source: source,
    updater: function(item) {
        $myTextarea.append(item, ' ');
        return '';
    }
});

我认为 updater 方法适用于这种情况，您只需返回将要显示的内容.

I think the updater method is meant for this kind of thing, you just return what will be displayed.

或者如果你真的希望所有东西都在同一个输入元素中，你将不得不覆盖更多的方法，以便它只匹配当前输入的元素:演示(jsfiddle)

Or if you really want everything to be in the same input element, you would have to override more methods so that it only matches the currently-typed element : Demo (jsfiddle)

function extractor(query) {
    var result = /([^,]+)$/.exec(query);
    if(result && result[1])
        return result[1].trim();
    return '';
}

$('.typeahead').typeahead({
    source: source,
    updater: function(item) {
        return this.$element.val().replace(/[^,]*$/,'')+item+',';
    },
    matcher: function (item) {
      var tquery = extractor(this.query);
      if(!tquery) return false;
      return ~item.toLowerCase().indexOf(tquery.toLowerCase())
    },
    highlighter: function (item) {
      var query = extractor(this.query).replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, '\\$&')
      return item.replace(new RegExp('(' + query + ')', 'ig'), function ($1, match) {
        return '<strong>' + match + '</strong>'
      })
    }
});

这不是白痴证明，因为你必须在最后输入特殊字符.

This one is not idiot proof, because you have to type at the end, after the special character.

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