此时我创建了一个非常简单的页面，并添加了一个使用javascript显示子菜单的菜单。我无法加载javascript，而且使用Firebug时我没有收到任何错误。除了javascript之外，我已经将我的页面删除了几乎没有内容，但它仍然无法加载。与菜单关联的CSS会加载。我没有写javascript，但有一个基本的概念，它是如何工作的。
以下是页面：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>The Journal</title>
<meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1">
<link href="http://celt.miamioh.edu/ject/images/favicon.png" rel="shortcut icon">
<script src="http://celt.miamioh.edu/newject/menuscript.js" language="javascript" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="menustyle.css" media="screen, print" />
</head>
<body>
<table border="0" cellpadding="0" cellspacing="0"><tr><td>
<a href="Link 1" onmouseover="setOverImg('1','');overSub=true;showSubMenu('submenu1','button1');" onmouseout="setOutImg('1','');overSub=false;setTimeout('hideSubMenu(\'submenu1\')',delay);" target="http://celt.miamioh.edu/newject/about.php"><img src="buttons/button1up.png" border="0" id="button1" vspace="1" hspace="1"></a><a href="Link 2" onmouseover="setOverImg('2','');overSub=true;showSubMenu('submenu2','button2');" onmouseout="setOutImg('2','');overSub=false;setTimeout('hideSubMenu(\'submenu2\')',delay);" target="http://celt.miamioh.edu/newject/archive.php"><img src="buttons/button2up.png" border="0" id="button2" vspace="1" hspace="1"></a><a href="Link 3" onmouseover="setOverImg('3','');overSub=true;showSubMenu('submenu3','button3');" onmouseout="setOutImg('3','');overSub=false;setTimeout('hideSubMenu(\'submenu3\')',delay);" target="http://celt.miamioh.edu/journals/subscription/subscriptionpage.php"><img src="buttons/button3up.png" border="0" id="button3" vspace="1" hspace="1"></a><br>
</td></tr></table>
<p>Test page for javascript functionality.</p>
</body>
</html>
这是他js：
subInfo[2] = new Array();
subInfo[3] = new Array();
//*** SET SUB MENUS TEXT LINKS AND TARGETS HERE ***//
subInfo[1][1] = new Array("Overview","http://celt.miamioh.edu/newject/about.php","");
subInfo[1][2] = new Array("Free Sample Issue","http://celt.miamioh.edu/newject/issue.php?v=19&n=1","");
subInfo[1][3] = new Array("Editorial Board/Staff","http://celt.miamioh.edu/newject/staff.php","");
subInfo[1][4] = new Array("Manuscript Submission","http://celt.miamioh.edu/newject/submission.php","");
subInfo[2][1] = new Array("Current Issue","http://celt.miamioh.edu/newject/issue.php?v=25&n=2","");
subInfo[2][2] = new Array("Issue Archive","http://celt.miamioh.edu/newject/archive.php","");
subInfo[2][3] = new Array("Special Issue Archive","http://celt.miamioh.edu/newject/special.php","");
subInfo[2][4] = new Array("Search Archive","http://celt.miamioh.edu/newject/search.php","");
subInfo[3][1] = new Array("Journal Subscription","http://celt.miamioh.edu/journals/subscription/subscriptionpage.php","");
subInfo[3][2] = new Array("Order Back Issue","http://celt.miamioh.edu/newject/order_backissues.php","");
subInfo[3][3] = new Array("Order Individual Articles","http://celt.miamioh.edu/newject/order_articles.php","");
//*** SET SUB MENU POSITION ( RELATIVE TO BUTTON ) ***//
var xSubOffset = 9;
var ySubOffset = 34;
//*** NO MORE SETTINGS BEYOND THIS POINT ***//
var overSub = false;
var delay = 1000;
totalButtons = upSources.length;
// GENERATE SUB MENUS
for ( x=0; x<totalButtons; x++) {
// SET EMPTY DIV FOR BUTTONS WITHOUT SUBMENU
if ( subInfo[x+1].length < 1 ) {
document.write('<div id="submenu' + (x+1) + '">');
// SET DIV FOR BUTTONS WITH SUBMENU
} else {
document.write('<div id="submenu' + (x+1) + '" class="dropmenu" ');
document.write('onMouseOver="overSub=true;');
document.write('setOverImg(\'' + (x+1) + '\',\'\');"');
document.write('onMouseOut="overSub=false;');
document.write('setTimeout(\'hideSubMenu(\\\'submenu' + (x+1) + '\\\')\',delay);');
document.write('setOutImg(\'' + (x+1) + '\',\'\');">');
document.write('<ul>');
for ( k=0; k<subInfo[x+1].length-1; k++ ) {
document.write('<li>');
document.write('<a href="' + subInfo[x+1][k+1][1] + '" ');
document.write('target="' + subInfo[x+1][k+1][2] + '">');
document.write( subInfo[x+1][k+1][0] + '</a>');
document.write('</li>');
}
document.write('</ul>');
}
document.write('</div>');
}
//*** MAIN BUTTONS FUNCTIONS ***//
// PRELOAD MAIN MENU BUTTON IMAGES
function preload() {
for ( x=0; x<totalButtons; x++ ) {
buttonUp = new Image();
buttonUp.src = buttonFolder + upSources[x];
buttonOver = new Image();
buttonOver.src = buttonFolder + overSources[x];
}
}
// SET MOUSEOVER BUTTON
function setOverImg(But, ID) {
document.getElementById('button' + But + ID).src = buttonFolder + overSources[But-1];
}
// SET MOUSEOUT BUTTON
function setOutImg(But, ID) {
document.getElementById('button' + But + ID).src = buttonFolder + upSources[But-1];
}
//*** SUB MENU FUNCTIONS ***//
// GET ELEMENT ID MULTI BROWSER
function getElement(id) {
return document.getElementById ? document.getElementById(id) : document.all ? document.all(id) : null;
}
// GET X COORDINATE
function getRealLeft(id) {
var el = getElement(id);
if (el) {
xPos = el.offsetLeft;
tempEl = el.offsetParent;
while (tempEl != null) {
xPos += tempEl.offsetLeft;
tempEl = tempEl.offsetParent;
}
return xPos;
}
}
// GET Y COORDINATE
function getRealTop(id) {
var el = getElement(id);
if (el) {
yPos = el.offsetTop;
tempEl = el.offsetParent;
while (tempEl != null) {
yPos += tempEl.offsetTop;
tempEl = tempEl.offsetParent;
}
return yPos;
}
}
// MOVE OBJECT TO COORDINATE
function moveObjectTo(objectID,x,y) {
var el = getElement(objectID);
el.style.left = x;
el.style.top = y;
}
// MOVE SUBMENU TO CORRESPONDING BUTTON
function showSubMenu(subID, buttonID) {
hideAllSubMenus();
butX = getRealLeft(buttonID);
butY = getRealTop(buttonID);
moveObjectTo(subID,butX+xSubOffset, butY+ySubOffset);
}
// HIDE ALL SUB MENUS
function hideAllSubMenus() {
for ( x=0; x<totalButtons; x++) {
moveObjectTo("submenu" + (x+1) + "",-500, -500 );
}
}
// HIDE ONE SUB MENU
function hideSubMenu(subID) {
if ( overSub == false ) {
moveObjectTo(subID,-500, -500);
}
}
//preload();
任何有关错误的帮助，甚至我自己如何能够进一步排除故障以找出问题都将受到赞赏。
答案 0 :(得分：1)
我创建了您的文件at JSBin here的副本，并且可以验证javascript确实在运行。
我还注意到你在底部//preload();注释了代码，也许这就是你期望执行的内容？
如果您仍未获得预期的结果，请尝试添加debugger;语句并在Firebug中运行，代码应该在您添加该代码的行中断。
答案 1 :(得分：0)
你的src链接不正确，要匹配js文件中的URL，它应该是
http://celt.miamioh.edu/newject/menuscript.js