web前端|js教程
JS,CSS,美化,下拉列表框
web前端-js教程
本文实例讲述了JS+CSS实现美化的下拉列表框效果。分享给大家供大家参考。具体如下：
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一款经过JS+CSS美化的下拉列表，效果很不错，但代码有点偏多，学习CSS的朋友可以学习一下方法，然后自己变通一下，把代码简化一下。
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运行效果下图例：
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具体代码如下：
JS+CSS下拉列表body{ font-size:12px; margin:0}.center{ margin-left:auto; margin-right:auto; margin-top:200px; width:300px;}#age_sel_2 div.tag_select{display:block;color:#000;width:62px;height:22px;background:transparent url("/file_images/article/08/811145849095.jpg") no-repeat 0 0;padding:0 10px;line-height:22px;}#age_sel_2 div.tag_select_hover{display:block;color:#000;width:62px;height:22px;background:transparent url("/file_images/article/08/811145849095.jpg") no-repeat 0 -22px;padding:0 10px;line-height:22px;}#age_sel_2 div.tag_select_open{display:block;color:#000;width:62px;height:22px;background:transparent url("/file_images/article/08/811145849095.jpg") no-repeat 0 -44px;padding:0 10px;line-height:22px;}#age_sel_2 ul.tag_options{position:absolute;margin:0;list-style:none;background:transparent url("/file_images/article/08/811145849095.jpg") no-repeat left bottom;padding:0 0 1px;margin:0;width:60px;}#age_sel_2 ul.tag_options li{background:transparent url("/file_images/article/08/811145849095.jpg") repeat-y -102px 0;display:block;width:61px;padding:0 10px;height:22px;text-decoration:none;line-height:22px;color:#000;}#age_sel_2 ul.tag_options li.open_hover{background:transparent url("/file_images/article/08/811145849095.jpg") no-repeat 0 -88px;color:#000}#age_sel_2 ul.tag_options li.open_selected{background:transparent url("/file_images/article/08/811145849095.jpg") no-repeat 0 -66px;color:#19555F}var selects = document.getElementsByTagName(select);var isIE = (document.all && window.ActiveXObject && !window.opera) ? true : false;function $(id) { return document.getElementById(id);}function stopBubbling (ev) { ev.stopPropagation();}function rSelects() { for (i=0;i<selects.length;i++){ selects[i].style.display =
one; select_tag = document.createElement(div); select_tag.id = select_ + selects[i].name; select_tag.className = select_box; selects[i].parentNode.insertBefore(select_tag,selects[i]); select_info = document.createElement(div); select_info.id = select_info_ + selects[i].name; select_info.className= ag_select; select_info.style.cursor=pointer; select_tag.appendChild(select_info); select_ul = document.createElement(ul); select_ul.id = options_ + selects[i].name; select_ul.className = ag_options; select_ul.style.position=absolute; select_ul.style.display=
one; select_ul.style.zIndex=999; select_tag.appendChild(select_ul); rOptions(i,selects[i].name); mouseSelects(selects[i].name); if (isIE){ selects[i].onclick = new Function("clickLabels3(\"+selects[i].name+");window.event.cancelBubble = true;"); } else if(!isIE){ selects[i].onclick = new Function("clickLabels3(\"+selects[i].name+")"); selects[i].addEventListener("click", stopBubbling, false); } }}function rOptions(i, name) { var options = selects[i].getElementsByTagName(option); var options_ul = options_ + name; for (n=0;n<selects[i].options.length;n++){ option_li = document.createElement(li); option_li.style.cursor=pointer; option_li.className=open; $(options_ul).appendChild(option_li); option_text = document.createTextNode(selects[i].options[n].text); option_li.appendChild(option_text); option_selected = selects[i].options[n].selected; if(option_selected){ option_li.className=open_selected; option_li.id=selected_ + name; $(select_info_ + name).appendChild(document.createTextNode(option_li.innerHTML)); } option_li.onmouseover = function(){ this.className=open_hover;} option_li.onmouseout = function(){ if(this.id==selected_ + name){ this.className=open_selected; } else { this.className=open; } } option_li.onclick = new Function("clickOptions("+i+","+n+",\"+selects[i].name+")"); }}function mouseSelects(name){ var sincn = select_info_ + name; $(sincn).onmouseover = function(){ if(this.className== ag_select) this.className= ag_select_hover; } $(sincn).onmouseout = function(){ if(this.className== ag_select_hover) this.className= ag_select; } if (isIE){ $(sincn).onclick = new Function("clickSelects(\"+name+");window.event.cancelBubble = true;"); } else if(!isIE){ $(sincn).onclick = new Function("clickSelects(\"+name+");"); $(select_info_ +name).addEventListener("click", stopBubbling, false); }}function clickSelects(name){ var sincn = select_info_ + name; var sinul = options_ + name; for (i=0;i<selects.length;i++){ if(selects[i].name == name){ if( $(sincn).className == ag_select_hover){ $(sincn).className = ag_select_open; $(sinul).style.display = \; } else if( $(sincn).className == ag_select_open){ $(sincn).className = ag_select_hover; $(sinul).style.display =
one; } } else{ $(select_info_ + selects[i].name).className = ag_select; $(options_ + selects[i].name).style.display =
one; } }}function clickOptions(i, n, name){ var li = $(options_ + name).getElementsByTagName(li); $(selected_ + name).className=open; $(selected_ + name).id=\; li[n].id=selected_ + name; li[n].className=open_hover; $(select_ + name).removeChild($(select_info_ + name)); select_info = document.createElement(div); select_info.id = select_info_ + name; select_info.className= ag_select; select_info.style.cursor=pointer; $(options_ + name).parentNode.insertBefore(select_info,$(options_ + name)); mouseSelects(name); $(select_info_ + name).appendChild(document.createTextNode(li[n].innerHTML)); $( options_ + name ).style.display =
one ; $( select_info_ + name ).className = ag_select; selects[i].options[n].selected = selected;}window.onload = function(e) { bodyclick = document.getElementsByTagName(ody).item(0); rSelects(); bodyclick.onclick = function(){ for (i=0;i<selects.length;i++){ $(select_info_ + selects[i].name).className = ag_select; $(options_ + selects[i].name).style.display =
one; } }}
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