jquery custom drop-down list example_form effects-JS Tutorial-php.cn

jquery custom drop-down list example_form effects

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Release： 2016-05-16 16:51:22

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Since I made the JQ custom paging plug-in and table plug-in last time, I haven’t customized the plug-in. I have been using linq and ef this month, and I haven’t touched the basic front-end. Today I have a colleague It was said that there was a project that required a checkbox in the drop-down box. I originally wanted to find a plug-in online, but after thinking about it, this function is actually not difficult, so I made one myself and took the opportunity to familiarize myself with the JQ custom plug-in again. Okay, okay, let’s attach the renderings first:

jquery custom drop-down list example_form effects

It doesn’t look that difficult, but it’s actually about strengthening your JQ so that it won’t become rusty if it’s not used for too long. alright. Attached is my code:

Copy code The code is as follows:

(function($){

var option={
     isEdit:false, //是否可以编辑:默认是否
     Listheight:200, //下拉框高度
     ListWidth:0,     //下拉框长度
     //数据源
     data:[
           {"value":1,"text":"选择1"},
           {"value":2,"text":"选择2"},
           {"value":3,"text":"选择3"},
           {"value":4,"text":"选择4"}
           ]
     }
           //开始创建下拉框
          function Start(obj)
          {
              if(!option.isEdit)
              {
              obj.attr({"readonly":"readonly"});
              }
            var      myList=$("

");
var ul=$("

");
           ul.css({"list-style":"none","margin":"0px","padding":"2px"});
           myList.css({"border":"1px solid #D9E5F3","position":"absolute","overflow-y":"scroll","background-color":"#fff","font-size":"12px"});
           if(option.Listheight<=0)
           {
               option.Listheight=200;
            }
           myList.height(option.Listheight);
           if(option.ListWidth<=0)
           {
             option.ListWidth=obj.width()
           }
              myList.width(option.ListWidth);
            //默认位置是在创建元素的下方
           myList.offset({"top":obj.offset().top obj.outerHeight(),"left":obj.offset().left});
           var data=option.data;

           if(data.length>0)
           {
          for(i=0;i          {
             var li=$("

");
              var ListSon=$("");
             ListSon.change(function(){
                    if(this.checked)
                    {
                        obj.val(obj.val() $(this).val());
                    }
                    else
                    {
                        obj.val(obj.val().replace($(this).val(),""));
                    }
                     })
              myList.mouseover(function(){
                            myList.show();
                        })
             myList.mouseout(function(){
                            myList.hide();
                        })
var span=$("");
span.text(data[i].text);
ListSon.val(data[i].value ";");
li.append(ListSon);
li.append(span);
ul.append(li);
}
}
myList.append( ul);
myList.appendTo("body");
myList.hide();

FoucsShow($(obj),myList);
}
              // when Get the focus so that the drop-down box appears
function FoucsShow(obj,myList)
.fn .createList=function(newoption)
                                                                              })(jQuery);

Foreground call:

Copy code

The code is as follows:

$("#d2").createList({ //Data source data:[ {"value":"C#","text":"C#"}, {"value":".NET","text": ".NET"}, {"value":"Java","text":"Java"},

{"value":"JSP","text":"JSP"},

            {"value": "C", "text": "C"},
                                                                                                                                                                                                                ","text":"javascript"},
                                                                                                                                                                     "},
                                                                                                                                                {"value":"xml","text":"Mysql"},
                                                                                                        ,"text":"JQuery"},
                                                                                                                                                            CSS3"},
                                                                                                                                                     🎜>            })