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我正在修改StackOverflow上的一个示例，以取代IE7上不支持一些不错的CSS布局的“select”组件。 这个例子没有滚动条，所以我添加了一个固定大小的div，这样滚动条就会出现，组件几乎完成。IE7 + JavaScript appendChild =滚动条错误
我的问题：
1 - 在IE7（IE9兼容模式）滚动条不会出现。任何解决这个问题？
2 - 如何才能将“div”定位在该位置上，但保持在其他组件的前方，而不是占用其全部大小？上的jsfiddle
我的代码/ HTML：
http://jsfiddle.net/mbarni/nTYWA/ （运行为 “无包（头）”）
内嵌代码/ HTML：
<!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" xml:lang="en" lang="en">
<head>
<style type="text/css">
body {
font: 80% 'Quicksand-Regular', Verdana, Geneva, sans-serif;
}
select {
display: block;
margin: 0 0 10px;
width: 300px;
}
select.replaced {
width: 1px;
position: absolute;
left: -999em;
}
ul.selectReplacement {
background: #10194B;
margin: 0 0 10px;
padding: 0;
height: 1.65em;
width: 300px;
position: relative;
z-index: 1000;
}
ul.selectFocused {
background: #10194B;
}
ul.selectReplacement li {
background: #09C;
color: #fff;
cursor: pointer;
display: none;
font-size: 11px;
line-height: 1.7em;
list-style: none;
margin: 0;
padding: 1px 12px;
width: 276px;
}
ul.selectOpen li {
display: block;
}
ul.selectReplacement li.selected {
background: #10194B;
border-bottom: 1px solid #fff;
color: #fff;
display: block;
}
ul.selectOpen li.selected {
background: #10194B;
border: 0;
display: block;
}
ul.selectOpen li:hover,
ul.selectOpen li.hover,
ul.selectOpen li.selected:hover {
background: #10194B;
color: #fff;
}
div.scroll {
overflow-y: auto;
overflow-x: hidden;
height: 100px;
width: 300px;
}
</style>
<script type="text/javascript">
function selectReplacement(obj) {
obj.className += ' replaced';
var ul = document.createElement('ul');
ul.className = 'selectReplacement';
var div = document.createElement('div');
div.className = 'scroll';
div.appendChild(ul);
var opts = obj.options;
var selectedOpt = (!obj.selectedIndex) ? 0 : obj.selectedIndex;
for (var i=0; i<opts.length; i++) {
var li = document.createElement('li');
var txt = document.createTextNode(opts[i].text);
li.appendChild(txt);
li.selIndex = i;
li.selectID = obj.id;
li.onclick = function() {
selectMe(this);
};
if (i == selectedOpt) {
li.className = 'selected';
li.onclick = function() {
this.parentNode.className += ' selectOpen';
this.onclick = function() {
selectMe(this);
};
};
}
if (window.attachEvent) {
li.onmouseover = function() {
this.className += ' hover';
};
li.onmouseout = function() {
this.className =
this.className.replace(new RegExp(" hover\\b"), '');
};
}
ul.appendChild(li);
}
obj.onfocus = function() {
ul.className += ' selectFocused';
};
obj.onblur = function() {
ul.className = 'selectReplacement';
};
obj.onchange = function() {
var idx = this.selectedIndex;
selectMe(ul.childNodes[idx]);
};
obj.onkeypress = obj.onchange;
obj.parentNode.insertBefore(div,obj);
}
function selectMe(obj) {
var lis = obj.parentNode.getElementsByTagName('li');
for (var i=0; i<lis.length; i++) {
if (lis[i] != obj) {
lis[i].className='';
lis[i].onclick = function() {
selectMe(this);
};
} else {
setVal(obj.selectID, obj.selIndex);
obj.className='selected';
obj.parentNode.className =
obj.parentNode.className.replace(new RegExp(" selectOpen\\b"), '');
obj.onclick = function() {
obj.parentNode.className += ' selectOpen';
this.onclick = function() {
selectMe(this);
};
};
}
}
}
function setVal(objID,val) {
var obj = document.getElementById(objID);
obj.selectedIndex = val;
}
function setForm() {
var s = document.getElementsByTagName('select');
for (var i=0; i<s.length; i++) {
selectReplacement(s[i]);
}
}
window.onload = function() {
(document.all && !window.print) ? null : setForm();
};
</script>
</head>
<body>
<select id="unidade">
<option value="001">TEST 1</option>
<option selected value="002">TEST 2</option>
<option value="003">TEST 3</option>
<option value="004">TEST 4</option>
<option value="005">TEST 5</option>
<option value="006">TEST 6</option>
<option value="007">TEST 7</option>
<option value="008">TEST 8</option>
</select>
</body>
</html>
使用jsfiddle来扩展这样的代码示例。 – katspaugh