Tag: sel&amp;#101;ct预览模式: 普通 | 列表

07-12

07

用javascript来实现select标签的美化的代码

作者:Java伴侣日期:2007-12-07

HTML代码

<head>
    <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
    <meta http-equiv="Content-Language" content="zh-CN" /> 
    <title>用javascript美化Select</title> 
    <style type="text/css"> 
    select{width:200px;height:20px;} 
</style> 
    </head>

<script type="text/javascript"> 
/************************************ 
*    js模拟Select                    * 
*    Author:Daviv                    * 
*    Date:2007-4-28                    * 
*    Blog:<a href="http://www.iwcn.net" target="_blank" rel="external">http://www.iwcn.net</a>        * 
*    Email:jxdawei#163.com            * 
************************************/ 
var childCreate=false; 
function Offset(e) 
//取标签的绝对位置 
{ 
    var t = e.offsetTop; 
    var l = e.offsetLeft; 
    var w = e.offsetWidth; 
    var h = e.offsetHeight-2; 
    while(e=e.offsetParent) 
    { 
        t+=e.offsetTop; 
        l+=e.offsetLeft; 
    } 
    return { 
        top : t, 
        left : l, 
        width : w, 
        height : h 
    } 
} 
function loadSelect(obj){ 
    //第一步：取得Select所在的位置 
    var offset=Offset(obj); 
    //第二步：将真的select隐藏 
    obj.style.display="none"; 
    //第三步：虚拟一个div出来代替select 
    var iDiv = document.createElement("div"); 
        iDiv.id="selectof" + obj.name; 
        iDiv.style.position = "absolute"; 
        iDiv.style.width=offset.width + "px"; 
        iDiv.style.height=offset.height + "px"; 
        iDiv.style.top=offset.top + "px"; 
        iDiv.style.left=offset.left + "px"; 
        iDiv.style.background="url(icon_select.gif) no-repeat right 4px"; 
        iDiv.style.border="1px solid #3366ff"; 
        iDiv.style.fontSize="12px"; 
        iDiv.style.lineHeight=offset.height + "px"; 
        iDiv.style.textIndent="4px"; 
    document.body.appendChild(iDiv); 
    //第四步：将select中默认的选项显示出来 
    var tValue=obj.options[obj.selectedIndex].innerHTML; 
    iDiv.innerHTML=tValue; 
    //第五步：模拟鼠标点击 
    iDiv.onmouseover=function(){//鼠标移到 
        iDiv.style.background="url(icon_select_focus.gif) no-repeat right 4px"; 
    } 
    iDiv.onmouseout=function(){//鼠标移走 
        iDiv.style.background="url(icon_select.gif) no-repeat right 4px"; 
    } 
    iDiv.onclick=function(){//鼠标点击 
        if (document.getElementById("selectchild" + obj.name)){ 
        //判断是否创建过div 
            if (childCreate){ 
                //判断当前的下拉是不是打开状态，如果是打开的就关闭掉。是关闭的就打开。 
                document.getElementById("selectchild" + obj.name).style.display="none"; 
                childCreate=false; 
            }else{ 
                document.getElementById("selectchild" + obj.name).style.display=""; 
                childCreate=true; 
            } 
        }else{ 
            //初始一个div放在上一个div下边，当options的替身。 
            var cDiv = document.createElement("div"); 
            cDiv.id="selectchild" + obj.name; 
            cDiv.style.position = "absolute"; 
            cDiv.style.width=offset.width + "px"; 
            cDiv.style.height=obj.options.length *20 + "px"; 
            cDiv.style.top=(offset.top+offset.height+2) + "px"; 
            cDiv.style.left=offset.left + "px"; 
            cDiv.style.background="#f7f7f7"; 
            cDiv.style.border="1px solid silver"; 
            var uUl = document.createElement("ul"); 
            uUl.id="uUlchild" + obj.name; 
            uUl.style.listStyle="none"; 
            uUl.style.margin="0"; 
            uUl.style.padding="0"; 
            uUl.style.fontSize="12px"; 
            cDiv.appendChild(uUl); 
            document.body.appendChild(cDiv);         
            childCreate=true; 
            for (var i=0;i<obj.options.length;i++){ 
                //将原始的select标签中的options添加到li中 
                var lLi=document.createElement("li"); 
                lLi.id=obj.options<i>.value; 
                lLi.style.textIndent="4px"; 
                lLi.style.height="20px"; 
                lLi.style.lineHeight="20px"; 
                lLi.innerHTML=obj.options[i].innerHTML; 
                uUl.appendChild(lLi); 
            } 
            var liObj=document.getElementById("uUlchild" + obj.name).getElementsByTagName("li"); 
            for (var j=0;j<obj.options.length;j++){ 
                //为li标签添加鼠标事件 
                liObj[j].onmouseover=function(){ 
                    this.style.background="gray"; 
                    this.style.color="white"; 
                } 
                liObj[j].onmouseout=function(){ 
                    this.style.background="white"; 
                    this.style.color="black"; 
                } 
                liObj[j].onclick=function(){ 
                    //做两件事情，一是将用户选择的保存到原始select标签中，要不做的再好看表单递交后也获取不到select的值了。 
                    obj.options.length=0; 
                    obj.options[0]=new Option(this.innerHTML,this.id); 
                    //同时我们把下拉的关闭掉。 
                    document.getElementById("selectchild" + obj.name).style.display="none"; 
                    childCreate=false; 
                    iDiv.innerHTML=this.innerHTML; 
                } 
            } 
        } 
    } 
} 
</script>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "<a href="<a href="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" target="_blank" rel="external">http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd</a>" target="_blank">

<body> 
        <h1>用javascript模拟select达到美化效果</h1> 
<form name="f" onsubmit="getResult();"> 
    <fieldset> 
        <legend>用户注册</legend> 
        <div> 
            <label for="username">帐号</label> 
            <input type="text" id="username" name="username" /> 
        </div> 
        <div> 
            <label for="pwd">密码</label> 
            <input type="password" name="pwd" id="pwd" /> 
        </div> 
        <div> 
            <label for="province">省份</label> 
            <select id="province" name="province"> 
                <option value="10">江西</option> 
                <option value="11">福建</option> 
                <option value="12">广东</option> 
                <option value="13">浙江</option> 
            </select> 
        </div> 
    </fieldset> 
    <input type="submit" value="提交" name="btnSub" /> 
</form> 
        <script type="text/javascript"> 
            loadSelect(document.f.province); 
        </script> 
     
          
     
    </body> 
</html>

[Ctrl+A 全部选择提示：你可先修改部分代码，再按运行]

[/i]

查看更多...

Tags: sel&#101;ct sel&#101;ct 标签标签美化美化

分类:Ajax/Js | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 476

Powered By PJBlog3 v3.1.6.227 CopyRight 2005 - 2008, Java伴侣 xhtml | css

Processed in 0.218750 second(s) , 3 queries , smixtrue Design By zKing