发信人: nightcat()
整理人: i_am_trueman(2003-10-22 16:31:05), 站内信件
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自己写一个select
下面是一个例子，不过我只用IE5测试过，IE4应该也行，其他的浏览器估计
不行：
test.htm
------------------------------------------------------------
<HTML>
<HEAD>
<TITLE>Cool SelectBox</TITLE>
<script type="text/javascript" src="select.js"></script>
<script type="text/javascript">
<!--
var overOptionCss = "background: buttonhighlight; color: black;\
border: 1 inset window;\
padding-left: 2; padding-right: 0; padding-bottom: 0; padding-top
: 2";
var sizedBorderCss = "1 outset buttonhighlight";
//-->
</script>
<style type="text/css">
.select {border: 0 inset buttonface; width: 100; font: icon; cursor:
default;}
.selected {border: 0 inset buttonface; background: buttonface; paddin
g: 0; font: icon;}
.selectTable {height: 100%; width: 100%;
border: 1 outset buttonhighlight; background: buttonface;}
.option {font: icon; padding: 0; padding-left: 3; padding-right: 3;
width: 100%;
background: buttonface; border: 1 solid buttonface; padding: 1;}
.dropDown {position: absolute; visibility: hidden; width: 100%; z-ind
ex: 99;
border: 1 outset window; padding: 0;
background: buttonface;}
.select .coolButton {width: 16px; height: 5; font-family: webdings; pa
dding: 1;
font-size: 11px;}
</style>
</HEAD>
<BODY>
<span class="select" id="select1" siZE="1" onchange="alert(this.option
s[this.selectedIndex].value)" style="margin: 10; position: relative; t
op: -70;">
<table class="selectTable" cellspacing="0" cellpadding="0"
onclick="toggleDropDown(this.parentElement)">
<tr>
<td class="selected"> </td>
<td align="CENTER" valign="MIDDLE" class="coolButton">
<span style="position: relative; left: 0; top: -2; width: 100%;">6</
span></td>
</tr>
</table>
<div class="dropDown" onclick="optionClick()" onmouseover="optionOver
()" onmouseout="optionOut()">
<div class="option" value="1" nowrap><img src="images/foldericon.gif
" width=16 height=16 border=0 align="absmiddle"> Item 1</div>
<div class="option" value="2" nowrap><img src="images/foldericon.gif
" width=16 height=16 border=0 align="absmiddle"> Item 2</div>
<div class="option" value="3" nowrap><img src="images/foldericon.gif
" width=16 height=16 border=0 align="absmiddle"> Item 3</div>
<div class="option" value="4" nowrap><img src="images/foldericon.gif
" width=16 height=16 border=0 align="absmiddle"> Item 4</div>
<div class="option" value="5" nowrap><img src="images/foldericon.gif
" width=16 height=16 border=0 align="absmiddle"> item 5</div>
<div class="option" value="6" nowrap><img src="images/foldericon.gif
" width=16 height=16 border=0 align="absmiddle"> item 6</div>
<div class="option" value="7" nowrap><img src="images/foldericon.gif
" width=16 height=16 border=0 align="absmiddle"> item 7</div>
</div>
</span>
<span class="select" id="select2" siZE="5" onchange="alert('K.')" styl
e="position: relative; left: 40;">
<table class="selectTable" cellspacing="0" cellpadding="0"
onclick="toggleDropDown(this.parentElement)">
<tr>
<td class="selected"> </td>
<td align="CENTER" valign="MIDDLE" class="coolButton"><span style="p
adding-left: 3px; width: 100%;">6</span></td>
</tr>
</table>
<div class="dropDown" onclick="optionClick()" onmouseover="optionOver
()" onmouseout="optionOut()">
<div class="option" value="1" nowrap><img src="images/foldericon.gif
" width=16 height=16 border=0 align="absmiddle"> Item 1</div>
<div class="option" value="2" nowrap><img src="images/foldericon.gif
" width=16 height=16 border=0 align="absmiddle"> Item 2</div>
<div class="option" value="3" nowrap><img src="images/foldericon.gif
" width=16 height=16 border=0 align="absmiddle"> Item 3</div>
<div class="option" value="4" nowrap><img src="images/foldericon.gif
" width=16 height=16 border=0 align="absmiddle"> Item 4</div>
<div class="option" value="5" nowrap><img src="images/foldericon.gif
" width=16 height=16 border=0 align="absmiddle"> item 5</div>
<div class="option" value="6" nowrap><img src="images/foldericon.gif
" width=16 height=16 border=0 align="absmiddle"> item 6</div>
<div class="option" value="7" nowrap><img src="images/foldericon.gif
" width=16 height=16 border=0 align="absmiddle"> item 7</div>
</div>
</span>
</BODY>
</HTML>
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select.js
----------------------------------------------------------
var overOptionCss = "background: highlight; color: highlighttext";
var sizedBorderCss = "2 inset buttonhighlight";
var globalSelect; //This is used when calling an unnamed selectbox wit
h onclick="this.PROPERTY"
var ie4 = (document.all != null);
var q = 0;
function initSelectBox(el) {
copySelected(el);
var size = el.getAttribute("size");
// These two lines combined with execution in optionClick() allow you
to write:
// onchange="alert(this.options[this.selectedIndex].value)"
el.options = el.children[1].children;
el.selectedIndex = findSelected(el); //Set the index now!
// Some methods that are supported on the real SELECT box
el.remove = new Function("i", "int_remove(this,i)");
el.item = new Function("i", "return this.options[i]");
el.add = new Function("e", "i", "int_add(this, e, i)");
// The real select box let you have lot of options with the same NAME.
In that case the item
// needs two arguments. When using DIVs you can't have two with the sa
me NAME (or ID) and
// then there is no need for the second argument
el.options[el.selectedIndex].selected = true;
dropdown = el.children[1];
if (size != null) {
if (size > 1) {
el.size = size;
dropdown.style.zIndex = 0;
initSized(el);
}
else {
el.size = 1;
dropdown.style.zIndex = 99;
if (dropdown.offsetHeight > 200) {
dropdown.style.height = "200";
dropdown.style.overflow = "auto";
}
}
}
highlightSelected(el,true);
}
function int_remove(el,i) {
if (el.options[i] != null)
el.options[i].outerHTML = "";
}
function int_add(el, e, i) {
var html = "<div class='option' noWrap";
if (e.value != null)
html += " value='" + e.value + "'";
if (e.style.cssText != null)
html += " style='" + e.style.cssText + "'";
html += ">";
if (e.text != null)
html += e.text;
html += "</div>"
if ((i == null) || (i >= el.options.length))
i = el.options.length-1;
el.options[i].insertAdjacentHTML("AfterEnd", html);
}
function initSized(el) {
//alert("initSized -------->");
var h = 0;
el.children[0].style.display = "none";
dropdown = el.children[1];
dropdown.style.visibility = "visible";
if (dropdown.children.length > el.size) {
dropdown.style.overflow = "auto";
for (var i=0; i<el.size; i++) {
h += dropdown.children[i].offsetHeight;
}
if (dropdown.style.borderWidth != null) {
dropdown.style.pixelHeight = h + 4; //2 * parseInt(dropdown.style.b
orderWidth);
}
else
dropdown.style.height = h;
}
dropdown.style.border = sizedBorderCss;
el.style.height = dropdown.style.pixelHeight;
}
function copySelected(el) {
var selectedIndex = findSelected(el);
selectedCell = el.children[0].rows[0].cells[0];
selectedDiv = el.children[1].children[selectedIndex];
selectedCell.innerHTML = selectedDiv.outerHTML;
}
// This function returns the first selected option and resets the rest
// in case some idiot has set more than one to selcted :-)
function findSelected(el) {
var selected = null;
ec = el.children[1].children; //the table is the first child
var ecl = ec.length;
for (var i=0; i<ecl; i++) {
if (ec[i].getAttribute("selected") != null) {
if (selected == null) { // Found first selected
selected = i;
}
else
ec[i].removeAttribute("selected"); //Like I said. Only one selecte
d!
}
}
if (selected == null)
selected = 0; //When starting this is the most logic start value if
none is present
return selected;
}
function toggleDropDown(el) {
if (el.size == 1) {
dropDown = el.children[1];
if (dropDown.style.visibility == "")
dropDown.style.visibility = "hidden";
if (dropDown.style.visibility == "hidden")
showDropDown(dropDown);
else
hideDropDown(dropDown);
}
}
function optionClick() {
el = getReal(window.event.srcElement, "className", "option");
if (el.className == "option") {
dropdown = el.parentElement;
selectBox = dropdown.parentElement;
oldSelected = dropdown.children[findSelected(selectBox)]
if(oldSelected != el) {
oldSelected.removeAttribute("selected");
el.setAttribute("selected", 1);
selectBox.selectedIndex = findSelected(selectBox);
}
if (selectBox.onchange != null) { // This executes the onchange when
you chnage the option
if (selectBox.id != "") { // For this to work you need to replace
this with an ID or name
eval(selectBox.onchange.replace(/this/g, selectBox.id));
}
else {
globalSelect = selectBox;
eval(selectBox.onchange.replace(/this/g, "globalSelect"));
}
}
if (el.backupCss != null)
el.style.cssText = el.backupCss;
copySelected(selectBox);
toggleDropDown(selectBox);
highlightSelected(selectBox, true);
}
}
function optionOver() {
var toEl = getReal(window.event.toElement, "className", "option");
var fromEl = getReal(window.event.fromElement, "className", "option")
;
if (toEl == fromEl) return;
var el = toEl;
if (el.className == "option") {
if (el.backupCss == null)
el.backupCss = el.style.cssText;
highlightSelected(el.parentElement.parentElement, false);
el.style.cssText = el.backupCss + "; " + overOptionCss;
this.highlighted = true;
}
}
function optionOut() {
var toEl = getReal(window.event.toElement, "className", "option");
var fromEl = getReal(window.event.fromElement, "className", "option")
;
if (fromEl == fromEl.parentElement.children[findSelected(fromEl.paren
tElement.parentElement)]) {
if (toEl == null)
return;
if (toEl.className != "option")
return;
}
if (toEl != null) {
if (toEl.className != "option") {
if (fromEl.className == "option")
highlightSelected(fromEl.parentElement.parentElement, true);
}
}
if (toEl == fromEl) return;
var el = fromEl;
if (el.className == "option") {
if (el.backupCss != null)
el.style.cssText = el.backupCss;
}
}
function highlightSelected(el,add) {
var selectedIndex = findSelected(el);
selected = el.children[1].children[selectedIndex];
if (add) {
if (selected.backupCss == null)
selected.backupCss = selected.style.cssText;
selected.style.cssText = selected.backupCss + "; " + overOptionCss;
}
else if (!add) {
if (selected.backupCss != null)
selected.style.cssText = selected.backupCss;
}
}
function hideShownDropDowns() {
var el = getReal(window.event.srcElement, "className", "select");
var spans = document.all.tags("SPAN");
var selects = new Array();
var index = 0;
for (var i=0; i<spans.length; i++) {
if ((spans[i].className == "select") && (spans[i] != el)) {
dropdown = spans[i].children[1];
if ((spans[i].size == 1) && (dropdown.style.visibility == "visible"
))
selects[index++] = dropdown;
}
}
for (var j=0; j<selects.length; j++) {
hideDropDown(selects[j]);
}
}
function hideDropDown(el) {
if (typeof(fade) == "function")
fade(el, false);
else
el.style.visibility = "hidden";
}
function showDropDown(el) {
if (typeof(fade) == "function")
fade(el, true);
else if (typeof(swipe) == "function")
swipe(el, 2);
else
el.style.visibility = "visible";
}
function initSelectBoxes() {
var spans = document.all.tags("SPAN");
var selects = new Array();
var index = 0;
for (var i=0; i<spans.length; i++) {
if (spans[i].className == "select")
selects[index++] = spans[i];
}
for (var j=0; j<selects.length; j++) {
initSelectBox(selects[j]);
}
}
function getReal(el, type, value) {
temp = el;
while ((temp != null) && (temp.tagName != "BODY")) {
if (eval("temp." + type) == value) {
el = temp;
return el;
}
temp = temp.parentElement;
}
return el;
}
if (ie4) {
window.onload = initSelectBoxes;
document.onclick = hideShownDropDowns;
}
--
※ 来源:．月光软件站 http://www.moon-soft.com．[FROM: 202.103.124.218]
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