Jquery下拉框多选插件

2020/05/19 14:46
阅读数 54

先上图:

<script type="text/javascript">
  $(document).ready(function () {
      $("select").MultDropList({selected:"0,1" });
  });
</script>

Demo页代码:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>下拉多选</title>
<script type="text/javascript" src="js/jquery-1.4.1.js"></script>
<script type="text/javascript" src="js/jqmuselect.js"></script>
<script type="text/javascript">
  $(document).ready(function () {
      $("select").MultDropList({selected:"0,1" });
  });
</script>

<style type="text/css">
body{
font-size:10pt;}
.wraper
{
       display:inline-block;
    }
 .list
 {
   overflow: auto;
   position: absolute;
   border: 1px solid #617775;
   display: none;
   background: none repeat scroll 0 0 #F0F6E4;
   float: left;
   z-index: 1000000;
 }
.list ul li
{
   width:85%;
   padding-top: 1px;
   padding-bottom: 1px;
   cursor:pointer;
   line-height: 22px;
 }

ul{padding-left :0px;list-style:none outside none;}
</style>
</head>

<body>
<select name="Gender" id="Gender" style="width:180px;" multiple="true" size="6" class="dropdownlist mul_multiple_select ">
<option value="0" title="男">男</option>
<option value="1" title="女">女</option>
<option value="2" title="保密">保密</option>
</select>

<select name="Gender2" id="Select1" style="width:180px;" multiple="true" size="6" class="dropdownlist mul_multiple_select ">
<option value="0" title="男1">男1</option>
<option value="1" title="女1">女1</option>
<option value="2" title="保密1">保密1</option>
</select>

</body>
</html>

插件jqmuselect.js代码:

// JavaScript Document
(function ($) {
    $.fn.extend({
        MultDropList: function (options) {
            var op = $.extend({ wraperClass: "wraper", width: "150px", height: "200px", data: "", selected: "" }, options);
            return this.each(function () {
                var $this = $(this); //select
                var width = $this.width();
                if (width < 100)
                    width = 100;
                var $thisold = $(this); //select
                $this.hide(); //隐藏原select
                var selData = $(this).children('option'); //获取所有select的数值
                var muid = $this.attr('id') + "_muselect";
                $this.after("<input readonly type='text' id='" + muid + "' />");
                $this = $("#" + muid);
                $this.css('width', width);
                var conSelector = "#" + $this.attr("id");
                var $wraper = $(conSelector).wrapAll("<div><div></div></div>").parent().parent().addClass(op.wraperClass);
 
                var $list = $('<div class="list"></div>').appendTo($wraper);
 
                $list.css({ "width": width });
                //控制弹出页面的显示与隐藏
                $this.click(function (e) {
                    //$(".list").hide();
                    $list.toggle();
                    e.stopPropagation();
                });
                $this.css('cursor', 'pointer');
 
                $(document).click(function () {
                    $list.hide();
                });
 
                $list.filter("*").click(function (e) {
                    e.stopPropagation();
                });
                //加载默认数据
                $list.append('<ul><li><input type="checkbox" class="selectAll" value="" /><span> 全部</span></li></ul>');
                var $ul = $list.find("ul");
 
 
                selData.each(function () {
                    $ul.append('<li><input type="checkbox" value="' + $(this).attr('value') + '" /><span> ' + $(this).text() + '</span></li>');
                });
 
                //加载勾选项
                var seledArr;
                if (op.selected.length > 0) {
                    seledArr = op.selected.split("&");
 
                    $.each(seledArr, function (index) {
                        $thisold.children("option[value='" + seledArr[index] + "']").attr('selected', true);
                        $("li input[value='" + seledArr[index] + "']", $ul).attr("checked", "checked");
                        var vArr = new Array();
                        $("input[class!='selectAll']:checked", $ul).each(function (index) {
                            vArr[index] = $(this).next().text();
                        });
                        $this.val(vArr.join(","));
                    });
                }
                //全部选择或全不选
                $("li:first input", $ul).click(function () {
                    if ($(this).attr("checked")) {
                        $("li input", $ul).attr("checked", "checked");
                    }
                    else {
                        $("li input", $ul).removeAttr("checked");
                    }
                });
                //点击其它复选框时,更新隐藏控件值,文本框的值
                $("input", $ul).click(function (event) {
                    window.event.cancelBubble = true
                    var kArr = new Array();
                    var vArr = new Array();
                    $("input[class!='selectAll']:checked", $ul).each(function (index) {
                        kArr[index] = $(this).val();
                        vArr[index] = $(this).next().text();
                    });
                    $thisold.children("option").removeAttr('selected');
                    for (i = 0; i < kArr.length; i++) {
                        $thisold.children("option[value='" + kArr[i] + "']").attr('selected', true);
                    }
                    $this.val(vArr.join(","));
                });
 
                //点击li的时候选择
                $("li", $ul).click(function () {
                    $(this).children().get(0).click();
                    return;
                });
            });
        }
    });
})(jQuery);

 

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