Select2在HTML中设置选定的值

Question

有没有办法可以在HTML中的select2中设置所选的id/text,就像显示和选择一样？

我正在使用jquery select2版本4.0.0

这是代码:

$("#users").select2({
    placeholder: "select user...",
    escapeMarkup: function (markup) { return markup; },
    ajax: {
        url: "users.json",
        dataType: 'json',
        delay: 250,
        data: function (params) {
            return {
                q: params.term, // search term
                page: params.page
            };
        },
        processResults: function (response, page) {
            return {
                results: response.data
            };
        },
        cache: true
    },
    templateResult: function(item){
        if (item.loading) {
            return item.text;
        }
        return item.username + " <small><i>(" + item.role  + ")</i></small> "; // display data in html
    },
    templateSelection: function(item){
        if (item.username){
            return item.username + " <small><i>(" + item.role  + ")</i></small> ";  // select row in html
        }
        return item.text; // for placeholder
    }
});

要设置所选值,我会:

// bring data for to set selected value, data contains fields data
var selected_user_id = data.id,

// this is the content that I need to use as it is HTML content
selected_user_text_html = data.username + " <small><i>(" + data.role  + ")</i></small> ",

// this is the one that I am using and is not html because there is no way to put html inside a option select item
selected_user_text_regular = data.username + " (" + data.role  + ") ";

// set selected value
$("#users").append("<option value='"+selected_user_id+"' selected='selected'>"+selected_user_text_regular+"</option>");

// trigger update
$("#users").trigger("change");

有没有办法可以用HTML而不是纯文本设置所选文本？

Answer 1

是的你可以。Select2 有两个有用的选项“ templateSelection ”和“ templateResult ”两者都是函数，您可以创建任何您想要的 html 包装器。只需将选项传递给 select2() 方法，就像这样..

var data = [{id: 100, text: "AAAAAA"}, {id: 200, text: "BBBB"}]

var formatState = function(result) {return $("<b>"+result.text+"</b>")}
var formatSelection = function(selection){return $("<b>"+selection.text+"</b>") }

$(".js-example-basic-single").select2({ data:data,templateResult: formatState, templateSelection: formatSelection
    }).val(100).change();

您应该看到 id:100 的选项被选中。

我希望我对你有帮助；