javascript美化プルダウンリスト1
6364 ワード
<!DOCTYPE >
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script type="text/javascript">
var childCreate = false;
function Offset(e) {
//
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) {
// ： select
var offset = Offset(obj);
// ： select
obj.style.display = "none";
// ： div 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(http://www.zcool.com.cn/pic/png5/130/pixelicious_001.png) no-repeat right -6px";
iDiv.style.border = "1px solid #ccc";
iDiv.style.fontSize = "12px";
iDiv.style.lineHeight = offset.height + "px";
iDiv.style.textIndent = "4px";
document.body.appendChild(iDiv);
// ： select
var tValue = obj.options[obj.selectedIndex].innerHTML;
iDiv.innerHTML = tValue;
// ：
iDiv.onmouSEOver = function() {//
iDiv.style.background = "url('image/test.jpg') no-repeat right -6px";
}
iDiv.onmouseout = function() {//
iDiv.style.background = "url('image/test.jpg') no-repeat right -6px";
}
iDiv.onclick = function() {//
if (document.getElementById("selectchild" + obj.name)) {
// div
if (childCreate) {
// ， 。 。
document.getElementById("selectchild" + obj.name).style.display = "none";
childCreate = false;
} else {
document.getElementById("selectchild" + obj.name).style.display = "";
childCreate = true;
}
} else {
// div div ， options 。
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++) {
// select options li
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++) {
// li
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() {
// ， select ， select 。
obj.options.length = 0;
obj.options[0] = new Option(this.innerHTML, this.id);
// 。
document.getElementById("selectchild" + obj.name).style.display = "none";
childCreate = false;
iDiv.innerHTML = this.innerHTML;
}
}
}
}
}
</script>
<style type="text/CSS">
select {
width: 200px;
height: 20px;
}
</style>
</head>
<body>
<form name="f">
<select id="PRovince" name="province">
<option value="10"> </option>
<option value="11"> </option>
<option value="12"> </option>
<option value="13"> </option>
<option value="13"> </option>
<option value="13"> </option>
<option value="13"> </option>
<option value="13"> </option>
<option value="13"> </option>
<option value="13"> </option>
<option value="13"> </option>
<option value="13"> </option>
</select>
</form>
<script type="text/javascript">
loadselect(document.f.province);
</script>
</body>
</html>