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javaScript模拟select下拉菜单，满足自定义select样式的需求+jquery实现

2012-03-31 17:46  VVG  阅读(2968)  评论(1)  编辑  收藏  举报

SELECT列表选择不支持样式设置，抽空用JS模拟了一个SELECT的样式，如下：

下拉菜单样式模拟，模拟下拉菜单

下拉菜单样式模拟，模拟下拉菜单

 
 

 

 

代码如下：

 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>下拉菜单样式模拟，模拟下拉菜单</title>
<style type="text/css">
.boxa{ margin: 10px;}
#warper,#warper1{ margin:20px; position:relative; width:100px; float: left;}
#warper1{ width:202px;}
#warper ul,#warper1 ul{list-style:none; margin: 0; padding:0;}
#warper ul li,#warper1 ul li{line-height:20px; cursor:pointer; margin:1px 0; font-size:12px; text-indent:5px;}
.inputbox{width:128px; height:23px; line-height:23px; background: #ccc url(http://img.allinbuy.cn/WebResources/WSTL/Images/shopping/point/slt.gif) no-repeat; border:none;  font-size:12px; text-indent:5px;}
.inputbox1{width:202px; height:23px; line-height:23px; background: #ccc ; border:1px solid #333;  font-size:12px; text-indent:5px;}
.listcss{ display:none;position:absolute;width:126px;left:0;top:22px;border:1px solid #ccc; background:#fff; }
.listcss1{ display:none;position:absolute;width:202px;left:0;top:25px;border:1px solid #ccc; background:#fff; }
.hover{ background:blue; color:#fff;}
.hover1{ background:red; color:#fff;}

</style>
</head>
<body>
<form action="" method="get" name="fr">
<div class="boxa">
    <!-- 设置SELECT隐藏，基本布局是一个DIV下面包裹SELECT与DIV显示框，用UL无序列表模拟SELECT的下拉菜单
    需要传入DIV包裹层的id，select的ID，内层DIV的ID,UL要应用的样式，li的鼠标放上去样式-->
    <div id="warper">    
        <select name="" id="select" style="display:none;">
            <option value="北京" >北京</option>
            <option value="上海">上海</option>
            <option value="重庆" selected>重庆</option>
            <option value="成都">成都</option>
            <option value="杭州">杭州</option>
            <option value="南京">南京</option>
        </select>
        <div class="inputbox" id = "input"></div>
    </div>
    <input type="submit" onclick="get('select','input'); return false" value = "测试" style="float:left; margin:20px;">
</div>
<div class="boxa">
    <div id="warper1">
        <select name="" id="select1" style="display:none;">
            <option value="北京" >北京</option>
            <option value="上海">上海</option>
            <option value="重庆" selected>重庆</option>
            <option value="成都">成都</option>
            <option value="杭州">杭州</option>
            <option value="南京">南京</option>
            <option value="成都">成都</option>
            <option value="杭州">杭州</option>
            <option value="南京">南京</option>
            <option value="成都">成都</option>
            <option value="杭州">杭州</option>
            <option value="南京">南京</option>
            <option value="成都">成都</option>
            <option value="杭州">杭州</option>
            <option value="南京">南京</option>
            <option value="成都">成都</option>
            <option value="杭州">杭州</option>
            <option value="南京">南京</option>
        </select>
        <div class="inputbox1" id = "input1"></div>    
    </div>
    <input type="submit" onclick="get('select1','input1'); return false" value = "测试" style="float:left; margin:20px;">
</div>
</form>
<script type="text/javascript">
    // 此处是为了测试修改数据后用的，可以去掉
    function get(select,input){ 
        var input1 = document.getElementById(select);
        var input2 = document.getElementById(input);
        alert("隐藏的SELECT现在的值："+input1.value + "\ndiv框现在的值：" + input2.innerHTML);
    }
</script>
<script type="text/javascript">
// 新建命名空间，可以修改成自己的
var VVG = {};
VVG.DOM = {};
// bindEvent方法，绑定事件
VVG.DOM.bindEvent = function(element,type,func){
    if(element.addEventListener){
        element.addEventListener(type,func,false);  //false 表示冒泡
    }else if(element.attachEvent){
        element.attachEvent("on"+type,func)
    }else{
        element["on"+ type] = func;
    }
};
// unbindEvent方法，取消绑定
VVG.DOM.unbindEvent = function(element,type,func){
    if(element.removeEventListener){
        element.removeEventListener(type,func,false);
    }else if(element.detachEvent){
        element.detachEvent("on"+type,func);
    }else{
        element["on"+type] = null;
    }
};
//停止冒泡
VVG.DOM.stopPropagation = function(event){
   if (event.stopPropagation) {
      event.stopPropagation();
   }else {
      event.cancelBubble = true;
   }
};
// 取消默认事件
VVG.DOM.preventDefault = function(event){
   if (event.preventDefault) {
      event.preventDefault();
   }else {
      event.returnValue = false;
   }
};
// 创建一个SELECT对象的构造函数
VVG.Selector = function(o){
    this.selectId = o.selectId; // 隐藏的SELECT的ID
    this.divId = o.divId; //  模拟显示SELECT值DIV的 id
    this.warperId = o.warperId; //包裹层的ID
    this.css = o.css;//下拉菜单的样式,即UL的CLASS样式
    this.liHover = o.licss; // 下拉菜单项鼠标放上去时的CSS样式
}
// 设置构造函数原型
VVG.Selector.prototype = {
    checkArguments : function(){
        if(this.selectId&&this.divId&&this.warperId&&this.css){
            return true;
        }else{
            alert("传入的ID参数为空或者格式不正确！");
            return false;
        }
    },
    createUl : function(){
        if(this.checkArguments()){
            var sId  = document.getElementById(this.selectId);
            var iId   = document.getElementById(this.divId);
            var wId = document.getElementById(this.warperId);
            var options = sId.getElementsByTagName("option"); //取得列表项
            //console.log(sId.value);
            iId.innerHTML = sId.value;//把SELECT的值赋给INPUT
            var ul = document.createElement("ul"); //创建UL
            var that = this;            
            for(var i = 0, n = options.length; i<n;i++){ //按照OPTIONS的长度生成标签li
                var li = document.createElement("li");
                li.innerHTML = options[i].value;//同步值
                // 绑定事件
                VVG.DOM.bindEvent(li,"mouseover",function(event){    
                    //鼠标划过的时候设置CSS 
                    var target = event.target || event.srcElement;
                    target.className = that.liHover;
                });
                VVG.DOM.bindEvent(li,"mouseout",function(event){
                    //  鼠标out的时候移除CSS
                    var target = event.target || event.srcElement;
                    target.className = "";
                });
                VVG.DOM.bindEvent(li,"click",function(event){
                    var target = event.target || event.srcElement;
                    //  鼠标点击的时候相关赋值
                    iId.innerHTML = target.innerHTML;
                    sId.value = iId.innerHTML;
                    ul.style.display = "none";
                    var event = event || window.event;
                    VVG.DOM.stopPropagation(event);            
                });                            
                ul.appendChild(li);

            }
            wId.appendChild(ul);
            ul.className = this.css;
            VVG.DOM.bindEvent(iId,"click", function(event){
                ul.style.display = "block";
                var event = event || window.event;
                VVG.DOM.stopPropagation(event);    
            })
            VVG.DOM.bindEvent(window,"click", function(event){
                // alert("1");
                ul.style.display = "none";
                })
            
        }
    }
}
var selector1 = new VVG.Selector({
    selectId:"select",
    divId:"input",
    warperId:"warper",
    css:"listcss",
    licss:"hover"
});
selector1.createUl();
var selector2 = new VVG.Selector({
    selectId:"select1",
    divId:"input1",
    warperId:"warper1",
    css:"listcss1",
    licss:"hover1"
});
selector2.createUl();
</script>
</body>
</html>

 

 

使用方法：

var selector1 = new VVG.Selector({ //新建实列
    selectId:"select", //selectID
    divId:"input", //内层DIV的ID
    warperId:"warper",//包裹层DIV的id
    css:"listcss",//ul下拉列表中UL的css
    licss:"hover"//li的HOVER样式
});
selector1.createUl();

然后自定义相关select模拟层的样式


Jquery 实现方法：

/*------------------------------------------------- +
 自定义SELECT表单样式
 使用方法：WellForm(id) //id 为表单元素form id
 +------------------------------------------------- */
function WellForm(id) {
    var $mySelects = $('#' + id).find('select');
    var n = $mySelects.length;
    var z = n;
    for (var i = 0; i < n; i++) {
        var $div = $("<div class='wellSelect'></div>");
        var $ul = $("<ul></ul>");
        var $em = $("<em></em>");
        $div.css('zIndex',z--);
        $div.click(
            function(){
                $('ul',this).show();
            }
        ).mouseleave(
            function(){
                $('ul',this).hide();
            }
        );
        $div.append($em);
        $div.append($ul);
        var $myOptions = $('option', $mySelects[i]);
        var k = $myOptions.length;
        for (var j = 0; j < k; j++) {
            var $myValue = $($myOptions[j]).val() ? $($myOptions[j]).val() : $($myOptions[j]).text();
            var $li = $("<li>" + $myValue + "</li>");
            $li.hover(function(){
                $(this).addClass('hover');
            },function(){
                $(this).removeClass('hover');
            });
            $li.click(function(){
                $(this).parent().prev().html($(this).text());
                var index = $(this).parent().find('li').index(this);
                $(this).parent().parent().next().get(0).selectedIndex = index;
                $(this).parent().parent().next().trigger("change");                                            
                $(this).parent().hide();            
                return false;
            });
            if ($myOptions[j].selected == true) {
                $em.html($myValue);
            }
            $ul.append($li);
            $ul.hide();
        }
        $($mySelects[i]).parent().find('label').after($div);
        $($mySelects[i]).hide();
    }
}
$(function () {
    WellForm('wellForm');
});

所需CSS：

/** wellSelect **/
.wellSelect{ position:relative; left:4px; background-position:right -325px; width:200px;height:24px; line-height:24px;  border:1px solid #ccc; display:inline-block; _display:inline; zoom:1;}
.wellSelect ul{ position:absolute;left:-1px; top:24px; background:#fff; width:200px; border:1px solid #ccc;}
.wellSelect ul li{ padding-left:5px; background:#fff; width:195px;}
.wellSelect ul li.hover{ background:#ccc;}

HTML结构：

<form id="wellForm">
        <div class="row">
            <label class="labeltext1">常付账单：</label>
            <select name="" class="select" onchange="alert('1111');">
                <option value="123354887">123354887</option>
                <option value="987552331">987552331</option>
                <option value="875121235">875121235</option>
                <option value="745215896">745215896</option>
            </select>
            <em class="addone"><a href="#">+新建一个缴费项目</a></em>
        </div>
        <div class="row">
            <label class="labeltext1">常付账单：</label>
            <select name="" class="select">
                <option value="123354887">123354887</option>
                <option value="987552331">987552331</option>
                <option value="875121235">875121235</option>
                <option value="745215896">745215896</option>
            </select>
        </div>
</form>

运行wellform函数后HTML代码：

<div class="row">
            <label class="labeltext1">常付账单：</label>
            <div class="wellSelect" style="z-index: 4; ">
               <em>123354887</em>
               <ul style="display: none; ">
                   <li>123354887</li>
                   <li>987552331</li>
                   <li>875121235</li>
                   <li>745215896</li>
               </ul>
            </div>
            <select name="" class="select" onchange="alert('1111');" style="display: none; ">
                <option value="123354887">123354887</option>
                <option value="987552331">987552331</option>
                <option value="875121235">875121235</option>
                <option value="745215896">745215896</option>
            </select>
            <em class="addone"><a href="#">+新建一个缴费项目</a></em>
        </div>