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- 註冊日: 2008/2/19
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- 發表數: 15771
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- [分享]JavaScript之多階層型功能選單
- 冷日在網路上收集來的
程式碼如下:
<SCRIPT LANGUAGE="JavaScript">
<!--
var isDOM = document.getElementById ? true : false;
var isIE4 = (document.all && !isDOM) ? true : false;
var isNS4 = document.layers ? true : false;
function Menu(isVert, popInd, x, y, width, overCol, backCol, borderClass, textClass) {
this.isVert = isVert;
this.popInd = popInd;
this.x = x;
this.y = y;
this.width = width;
this.overCol = overCol;
this.backCol = backCol;
this.borderClass = borderClass;
this.textClass = textClass;
this.parentMenu = null;
this.parentItem = null;
this.ref = null;
}
function Item(text, href, frame, length, spacing, target) {
this.text = text;
this.href = href;
this.frame = frame;
this.length = length;
this.spacing = spacing;
this.target = target;
this.ref = null;
}
function getRef(id) {
if (isDOM) return document.getElementById(id);
if (isIE4) return document.all[id];
if (isNS4) return document.layers[id];
}
function getSty(id) {
return (isNS4 ? getRef(id) : getRef(id).style);
}
var popTimer = 0;
var litNow = new Array();
function popOver(menuNum, itemNum) {
clearTimeout(popTimer);
hideAllBut(menuNum);
litNow = getTree(menuNum, itemNum);
changeCol(litNow, true);
targetNum = menu[menuNum][itemNum].target;
if (targetNum > 0) {
thisX = parseInt(menu[menuNum][0].ref.left) + parseInt(menu[menuNum][itemNum].ref.left);
thisY = parseInt(menu[menuNum][0].ref.top) + parseInt(menu[menuNum][itemNum].ref.top);
with (menu[targetNum][0].ref) {
left = parseInt(thisX + menu[targetNum][0].x);
top = parseInt(thisY + menu[targetNum][0].y);
visibility = 'visible';
}
}
}
function popOut(menuNum, itemNum) {
if ((menuNum == 0) && !menu[menuNum][itemNum].target) hideAllBut(0);
else popTimer = setTimeout('hideAllBut(0)', 500);
}
function getTree(menuNum, itemNum) {
itemArray = new Array(menu.length);
while (1) {
itemArray[menuNum] = itemNum;
if (menuNum == 0) return itemArray;
itemNum = menu[menuNum][0].parentItem;
menuNum = menu[menuNum][0].parentMenu;
}
return "";
}
function changeCol(changeArray, isOver) {
for (menuCount = 0; menuCount < changeArray.length; menuCount++) {
if (changeArray[menuCount]) {
newCol = isOver ? menu[menuCount][0].overCol : menu[menuCount][0].backCol;
with (menu[menuCount][changeArray[menuCount]].ref) {
if (isNS4) bgColor = newCol;
else backgroundColor = newCol;
}
}
}
}
function hideAllBut(menuNum) {
var keepMenus = getTree(menuNum, 1);
for (count = 0; count < menu.length; count++)
if (!keepMenus[count]) menu[count][0].ref.visibility = 'hidden';
changeCol(litNow, false);
}
function writeMenus() {
for (currMenu = 0; currMenu < menu.length; currMenu++)
with (menu[currMenu][0]) {
var str = '', itemX = 0, itemY = 0;
for (currItem = 1; currItem < menu[currMenu].length; currItem++)
with (menu[currMenu][currItem]) {
var itemID = 'menu' + currMenu + 'item' + currItem;
var w = (isVert ? width : length);
var h = (isVert ? length : width);
if (isDOM || isIE4) {
str += '<div id="' + itemID +
'" style="position: absolute; left: ' + itemX +
'; top: ' + itemY + '; width: ' + w + '; height: ' + h +
'; visibility: inherit; ';
if (backCol) str += 'background: ' + backCol + '; ';
str += '" ';
}
if (isNS4) {
str += '<layer id="' + itemID + '" left="' + itemX +
'" top="' + itemY + '" width="' + w + '" height="' + h +
'" visibility="inherit" ';
if (backCol) str += 'bgcolor="' + backCol + '" ';
}
if (borderClass) str += 'class="' + borderClass + '" ';
str += 'onMouseOver="popOver(' + currMenu + ',' + currItem +
')" onMouseOut="popOut(' + currMenu + ',' + currItem + ')">';
str += '<table width="' + (w - 8) +
'" border="0" cellspacing="0" cellpadding="' +
(!isNS4 && borderClass ? 3 : 0) +
'"><tr><td align="left" height="' + (h - 7) +
'">' + '<a class="' + textClass + '" href="' + href +
'"' + (frame ? ' target="' + frame + '">' : '>') + text +
'</a></td>';
if (target > 0) {
menu[target][0].parentMenu = currMenu;
menu[target][0].parentItem = currItem;
if (popInd) str += '<td class="' + textClass +
'" align="right">' + popInd + '</td>';
}
str += '</tr></table>' + (isNS4 ? '</layer>' : '</div>');
if (isVert) itemY += length + spacing;
else itemX += length + spacing;
}
if (isDOM) {
var newDiv = document.createElement('div');
document.getElementsByTagName('body').item(0).appendChild(newDiv);
newDiv.innerHTML = str;
ref = newDiv.style;
ref.position = 'absolute';
ref.visibility = 'hidden';
}
if (isIE4) {
document.body.insertAdjacentHTML('beforeEnd',
'<div id="menu' + currMenu + 'div" ' +
'style="position: absolute; visibility: hidden">' + str + '</div>');
ref = getSty('menu' + currMenu + 'div');
}
if (isNS4) {
ref = new Layer(0);
ref.document.write(str);
ref.document.close();
}
for (currItem = 1; currItem < menu[currMenu].length; currItem++) {
itemName = 'menu' + currMenu + 'item' + currItem;
if (isDOM || isIE4) menu[currMenu][currItem].ref = getSty(itemName);
if (isNS4) menu[currMenu][currItem].ref = ref.document[itemName];
}
}
with (menu[0][0]) {
ref.left = x;
ref.top = y;
ref.visibility = 'visible';
}
}
var defOC = '#F9E473';
var defBC = 'Silver';
var menu = new Array();
menu[0] = new Array();
menu[0][0] = new Menu(false, '', 120, 200, 20, defOC, defBC, 'itemBorder', 'itemText');
menu[0][1] = new Item('冷日-1', '#', '', 100, 1, 1);
menu[0][2] = new Item('冷日-2', '#', '', 100, 1, 2);
menu[0][3] = new Item('冷日-3', '#', '', 100, 1, 3);
menu[1] = new Array();
menu[1][0] = new Menu(true, '>', 0, 23, 90, defOC, defBC, 'itemBorder', 'itemText');
menu[1][1] = new Item('冷日-1.1', 'http://skr.hypermart.net/', '', 25, 0, 0);
menu[1][2] = new Item('冷日-1.2', 'http://www.skrnet.com/', '', 25, 0, 4);
menu[2] = new Array();
menu[2][0] = new Menu(true, '', 0, 23, 90, defOC, defBC, 'itemBorder', 'itemText');
menu[2][1] = new Item('冷日-2.1', 'http://www.skrnet.com/skrjs/index01.htm', '', 25, 0, 0);
menu[2][2] = new Item('冷日-2.2', 'http://www.skrnet.com/skrjs/index02.htm', '', 25, 0, 0);
menu[2][3] = new Item('冷日-2.3', 'http://www.skrnet.com/skrtalk/', '', 25, 0, 0);
menu[3] = new Array();
menu[3][0] = new Menu(true, '>', 0, 23, 90, defOC, defBC, 'itemBorder', 'itemText');
menu[3][1] = new Item('冷日-3.1', 'http://www.skrnet.com/info.htm', '', 25, 0, 0);
menu[3][2] = new Item('冷日-3.2', 'http://www.skrnet.com/v-index.htm', '', 25, 0, 0);
menu[3][3] = new Item('冷日-3.3', '#', '', 25, 0, 0);
menu[4] = new Array();
menu[4][0] = new Menu(true, '', 90, 0, 90, defOC, defBC, 'itemBorder', 'itemText');
menu[4][1] = new Item('冷日-4.1', 'http://www.skrnet.com/project.htm', '', 25, 0, 0);
menu[4][2] = new Item('冷日-4.2', 'http://www.skrnet.com/p04.htm', '', 25, 0, 0);
var popOldWidth = window.innerWidth;
nsResizeHandler = new Function('if (popOldWidth != window.innerWidth) location.reload()');
if (isNS4) document.captureEvents(Event.CLICK);
document.onclick = clickHandle;
function clickHandle(evt) {
if (isNS4) document.routeEvent(evt);
hideAllBut(0);
}
function moveRoot() {
with (menu[0][0].ref) left = (parseInt(left) < 100) ? 100 : 5;
}
// -->
</SCRIPT>
然後再BODY這一郭TAG裡面還要加東西
<BODY onLoad="writeMenus();" onResize="if (isNS4) nsResizeHandler();">
這樣就會有一郭美美的下拉式選單,任由你定位要放在網頁的哪裡
範例
關於兩種類型的設定大致如下:
Menu 選單(隱藏,圖示,X,Y,當 false 時為高 ture 時為寬,取代色,背景色,線條格式,文字格式)
Item 選項(顯示文字,鏈結位址,作用區,長度,間隔,目的選單)
歡迎大家多多討論喔...
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