select2简单例子

1.html中静态值

html

<%--multiple 为多选--%>
<select multiple id="e1">
        <option></option>
        <option value="AL">Alabama</option>
        <option value="WY">Wyoming</option>
</select>

js

 $(document).ready(function() { 
            $("#e1").select2({
                placeholder: "Choose a person",
                width:"200px",
                closeOnSelect: false
            });
});

2.通过js赋值：

html

<input type="hidden" id="e2" />

js

var data = [{id: 0, text:'story'},{id: 1, text:'bug'},{id: 2, text: 'task'}]; 
//或者一下形式都可，但必须是text属性
//var data = [{"id": "0", "text": "story"},{"id": "1", "text": "bug"},{"id": "2", "text": "task"}];
$("#e2").select2({
     width:"200px",
     multiple:true,
     data:data   
});

js

//当数据源不是text属性时var source=[{id:0,tag:'enhancement'},{id:1,tag:'bug'},{id:2,tag:'duplicate'},{id:3,tag:'invalid'},{id:4,tag:'wontfix'}];
function format(item) { return item.tag; }   
         
$("#e2").select2({
    width:"200px",
    multiple:true,
    data:source,
    formatSelection: format,
    formatResult: format
});

 3.获取值

alert(JSON.stringify($('#e3').select2('data')))