javascript模拟select实现代码

时间：2021-04-18 09:52:14|栏目：JavaScript代码|点击：次

最近迷茫于javascript的闭包与继承，写一个小东西找找感觉。

JS+CSS模拟Select下拉框，选择表单效果

网页中使用Select语法实现的下拉框是很普遍的，但是您有没有见过使用JS+CSS模拟的Select下拉框？并且可以选择表单哦，尽管代码复杂了点，但是对于我们了解此类特效非常有帮助。

<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>DIV+CSS+JS仿下拉表单</title> <script type="text/javascript" > function $$$$$(_sId){ return document.getElementById(_sId); } function hide(_sId) {$$$$$(_sId).style.display = $$$$$(_sId).style.display == "none" ? "" : "none";} function pick(v) { document.getElementById('am').value=v; hide('HMF-1') } function bgcolor(id){ document.getElementById(id).style.background="#F7FFFA"; document.getElementById(id).style.color="#000"; } function nocolor(id){ document.getElementById(id).style.background=""; document.getElementById(id).style.color="#788F72"; } </script> <style type="text/css"> * { margin:0px; padding:0px; } body { font-family: Arial, Helvetica, sans-serif; font-size: 12px; } .cur { cursor:pointer; display:block; color:#788F72; width:71px; height:22px; line-height:22px; padding:0px 0px 0px 2px; } .am { border: 0px; color:#788F72; cursor: pointer; background: url(/uploads/allimg/1111/icon_111.jpg) no-repeat center center; border:1px #ccc solid; display:block; cursor:pointer; width:73px; height: 19px; margin:10px 0px 0px 10px; padding:3px 0px 0px 2px; } .bm { border: 1px #999999 solid; width:73px; margin-left:10px; } </style> </head> <body> <form> <input onclick="hide('HMF-1')" type="text" value="请选择" id="am" class="am" /> <div id="HMF-1" style="display: none " class="bm"> <span id="a1" onclick="pick('测试一')" onMouseOver="bgcolor('a1')" onMouseOut="nocolor('a1')" class="cur">测试一</span> <span id="a2" onclick="pick('测试二')" onMouseOver="bgcolor('a2')" onMouseOut="nocolor('a2')" class="cur">测试二</span> <span id="a3" onclick="pick('测试三')" onMouseOver="bgcolor('a3')" onMouseOut="nocolor('a3')" class="cur">测试三</span> <span id="a4" onclick="pick('测试四')" onMouseOver="bgcolor('a4')" onMouseOut="nocolor('a4')" class="cur">测试四</span> <span id="a5" onclick="pick('测试五')" onMouseOver="bgcolor('a5')" onMouseOut="nocolor('a5')" class="cur">测试五</span> <span id="a6" onclick="pick('测试六')" onMouseOver="bgcolor('a6')" onMouseOut="nocolor('a6')" class="cur">测试六</span> </div> </form> </body> </html>

[Ctrl+A 全选注:引入外部Js需再刷新一下页面才能执行]

这个作品在没有任何需求下完成，不保证能应用于实际应用，仅用于自娱自乐。

[Ctrl+A 全选注:引入外部Js需再刷新一下页面才能执行]

用js模拟实现表单select选择的功能

<!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>用js模拟实现表单select选择的功能</title> <style type="text/css"> .t_search {width:900px; margin:auto;} .t_s_item {width:100px; float:left;} /* s_select start */ .select_box {cursor:default; text-align:left;} .select_value {border:1px solid; filter:alpha(opacity:0); visibility:hidden; overflow-x:hidden; overflow:auto; position:absolute;} .select_record0 {padding-left:4px; background:#fff; width:100%; color:#000; height:20px; line-height:20px;} .select_record1 {padding-left:4px; background:#ccc; width:100%; color:#000; height:20px; line-height:20px;} /* s_select end */ </style> <script type="text/javascript"> /* s_search start */ var sortname; var age; var addr; var keywords; var dropShow=false; var currentID; function dropdown(el){ if(dropShow){ dropFadeOut(); }else{ currentID=document.getElementById(el); currentID.style.visibility="visible"; dropFadeIn(); } } function dropFadeIn(){//选单淡入的效果 if(currentID.filters.alpha.opacity<100){ currentID.filters.alpha.opacity+=20; fadeTimer=setTimeout("dropFadeIn()",50); }else{ dropShow=true; clearTimeout(fadeTimer); } } function dropFadeOut(){//选单淡出的效果 if(currentID.filters.alpha.opacity>0){ clearTimeout(fadeTimer); currentID.filters.alpha.opacity-=20; fadeTimer=setTimeout("dropFadeOut()",50); }else{ dropShow=false; currentID.style.visibility="hidden"; } } function dropdownHide(){ if(dropShow){ dropFadeOut(); dropShow=false; } } function hiLight(el){//高亮度显示指标位置 if(dropShow){ for(i=0;i<el.parentElement.childNodes.length;i++){ el.parentElement.childNodes(i).className="select_record0"; } el.className="select_record1"; } } function CheckMe(el){//替换显示内容 //预留 var tempTxt; tempTxt=el.innerText; if(el.innerText.indexOf("┝") >= 0){tempTxt=el.innerText.replace("┝","");} document.getElementById("text").innerText=tempTxt.substring(0,tempTxt.indexOf("|")); tempstr=tempTxt.substring(tempTxt.indexOf("|")+1); } function CheckMe1(el){//替换显示内容 document.getElementById("text1").innerText=el.innerText; sortname=el.innerText; } function CheckMe2(el){//替换显示内容 document.getElementById("text2").innerText=el.innerText; age=el.innerText; } function CheckMe3(el){//替换显示内容 document.getElementById("text3").innerText=el.innerText; addr=el.innerText; } document.onclick=dropdownHide; function go_search(){ keywords=document.getElementById("form_search").keywords.value; if(!sortname){sortname="";} if(!age){age="";} if(!addr){addr="";} if(keywords=="请输入你要找的信息！"){keywords="";} location.href="userlist.php?sortname="+sortname+"&age="+age+"&addr="+addr+"&keywords="+keywords; } /* s_search end */ </script> </head> <body> <div class="t_search"> <form id="form_search" name="form_search" action="userlist.php" method="get"> <div class="t_s_item"> <div class="select_box" onselectstart="return false" style="width:110px;"> <div onclick="dropdown('value1')" style="width:106px; padding-left:4px; height:17px; padding-top:7px;"> <nobr><label id="text1">选择类别</label></nobr> </div> <div class="select_value" id="value1" style="WIDTH: 108px; HEIGHT: 100px; z-index:100000;"> <div class="select_record0" onMouseOver="hiLight(this)" onClick="CheckMe1(this)">类别1</div> <div class="select_record0" onMouseOver="hiLight(this)" onClick="CheckMe1(this)">类别2</div> <div class="select_record0" onMouseOver="hiLight(this)" onClick="CheckMe1(this)">类别3</div> </div> </div> </div> <div class="t_s_item"> <div class="select_box" onselectstart="return false" style="width:110px;"> <div onclick="dropdown('value2')" style="width:106px; padding-left:4px; height:17px; padding-top:7px;"> <nobr><label id="text2">年龄</label></nobr> </div> <div class="select_value" id="value2" style="WIDTH: 108px; HEIGHT: 100px; z-index:100000;"> <div class="select_record0" onMouseOver="hiLight(this)" onClick="CheckMe2(this)">18-25岁</div> <div class="select_record0" onMouseOver="hiLight(this)" onClick="CheckMe2(this)">26-32岁</div> </div> </div> </div> <div class="t_s_item"> <div class="select_box" onselectstart="return false" style="width:110px;"> <div onclick="dropdown('value3')" style="width:106px; padding-left:4px; height:17px; padding-top:7px;"> <nobr><label id="text3">所在地</label></nobr> </div> <div class="select_value" id="value3" style="WIDTH: 108px; HEIGHT: 100px; z-index:100000;"> <div class="select_record0" onMouseOver="hiLight(this)" onClick="CheckMe3(this)">上海</div> <div class="select_record0" onMouseOver="hiLight(this)" onClick="CheckMe3(this)">浙江</div> <div class="select_record0" onMouseOver="hiLight(this)" onClick="CheckMe3(this)">福建</div> <div class="select_record0" onMouseOver="hiLight(this)" onClick="CheckMe3(this)">广东</div> </div> </div> </div> <div class="t_s_item" style="width:268px;"><input style="width:264px; height:18px; border-style:none; background:none; padding-top:4px; padding-left:4px;" name="keywords" id="keywords" value="请输入你要找的信息！" type="text" onfocus="javascript:this.value='';" /></div> <div class="t_s_item" style="margin-left:11px; width:100px;"><img src="wp-content/uploads/2010/11/t_s_btn.jpg" width="100" height="24" alt="search" border="0" onclick="go_search()" /></div> </form> </div> </body> </html>

[Ctrl+A 全选注:引入外部Js需再刷新一下页面才能执行]

在不改变HTML结构的前提下，可更改其它样式。建议用IE8与FF浏览，可与默认样式进行对比。

发布一来是为了记录自己学习过程，二来想请朋友指点一下迷津，哪些地方欠妥或者有更好的思路可以给我指点一下，谢谢。

上一篇：关于JavaScript中var声明变量作用域的推断

栏目：JavaScript代码

下一篇：javascript实现日期三级联动下拉框选择菜单

本文标题：javascript模拟select实现代码

本文地址：http://www.codeinn.net/misctech/103976.html

更多JavaScript代码

JavaScript代码

javascript模拟select实现代码

阅读排行

推荐教程