Javascript没有更改CSS变量
我试图操纵CSS变量以从相对于屏幕大小的位置启动菜单,但它不会从样式部分开头初始化的值更改 我的代码可以在Javascript没有更改CSS变量,javascript,css,Javascript,Css,我试图操纵CSS变量以从相对于屏幕大小的位置启动菜单,但它不会从样式部分开头初始化的值更改 我的代码可以在 :根{ --左侧:50; } #李明伟, #菜单v a{ 缩放:1; } /*IE6、IE7的黑客*/ #菜单-v{ 宽度:180px; /*主菜单项宽度*/ 边框:1px实心#ccc; 边界顶部:无; 位置:相对位置; 字号:0; 列表样式:无; 填充:0; 显示:块; 左边距:计算值(var(--左边)*1px); 边缘顶端:40px; z指数:9; } #菜单-v ul{ 宽度:1
:根{
--左侧:50;
}
#李明伟,
#菜单v a{
缩放:1;
}
/*IE6、IE7的黑客*/
#菜单-v{
宽度:180px;
/*主菜单项宽度*/
边框:1px实心#ccc;
边界顶部:无;
位置:相对位置;
字号:0;
列表样式:无;
填充:0;
显示:块;
左边距:计算值(var(--左边)*1px);
边缘顶端:40px;
z指数:9;
}
#菜单-v ul{
宽度:180px;
/*主菜单项宽度*/
边框:1px实心#ccc;
边界顶部:无;
位置:相对位置;
字号:0;
列表样式:无;
填充:0;
显示:块;
保证金:0;
z指数:9;
}
/*顶级菜单链接样式
---------------------------------------*/
#菜单-v李{
背景:#FFF url(bg.gif)repeat-x 0 2px;
列表样式:无;
保证金:0;
填充:0;
}
#菜单-v李a{
字体:普通12px Arial;
边框顶部:1px实心#ccc;
显示:块;
/*溢出:自动;强制IE7中的布局*/
颜色:黑色;
文字装饰:无;
线高:26px;
左侧填充:26px;
}
#菜单-v ul li a{
线高:30px;
}
#menu-v li a.箭头:悬停{
背景图像:url(arrowon.gif);
背景重复:无重复;
背景位置:97%50%;
}
/*子级菜单项
---------------------------------------*/
#菜单-v li ul{
位置:绝对位置;
宽度:200px;
/*子菜单项宽度*/
可见性:隐藏;
}
#菜单v a箭头{
背景图像:url(arrow.gif);
背景重复:无重复;
背景位置:97%50%;
}
#menu-v li:悬停,
#菜单-v li.onhover{
背景位置:0-62px;
}
#菜单-v ul li{
背景:rgba(255,255,255,0.86);
背景图像:无;
}
#menu-v ul li:悬停,
#菜单-v ul li.onhover{
背景:#FFF;
背景图像:无;
}
var alignwithmain菜单=false;
/*垂直菜单-由http://www.MenuCool.com/vertical/vertical-menu. 需要保留此注释*/
函数initmenu(){
menu-v.style.setProperty('--LeftSide',((document.documentElement.clientWidth/2)-470));
var e=document.getElementById(“menuV2”);
var i=即偏离视线;
var b=e.getElementsByTagName(“ul”);
var g=/msie | msie 6/.test(navigator.userAgent);
如果(g){
对于(var h=e.getElementsByTagName(“li”),a=0,j=h.length;ai){
var f;
如果(b[a]。远视>i){
f=-d;
}否则{
f=i-b[a]。远视-d;
b[a].style.top=f+“px”;
}
}
}
c、 onmouseover=函数(){
如果(g){
this.className=“onhover”;
}
var a=this.getElementsByTagName(“ul”)[0];
如果(a){
a、 style.visibility=“可见”;
a、 style.display=“block”;
}
};
c、 onmouseout=函数(){
如果(g){
this.className=“”;
}
this.getElementsByTagName(“ul”)[0].style.visibility=“hidden”;
this.getElementsByTagName(“ul”)[0].style.display=“无”;
};
}
对于(变量a=b.length-1;a>-1;a--){
b[a].style.display=“无”;
}
}
函数getParentOffsetRoot(a,b){
如果(a.id==“菜单2”){
返回b;
}否则{
b+=a.偏置;
返回getParentOffsetRoot(a.parentNode.parentNode,b);
}
}
if(window.addEventListener){
addEventListener(“加载”,初始菜单,false);
}否则{
window.attachEvent&&window.attachEvent(“onload”,初始菜单);
}
//函数myfunction(){
//document.menu-v.style.setProperty('--LeftSide',((document.documentElement.clientWidth/2)-470));
// }
//window.onload=myfunction;
我试图将所有HTML、CSS和Javascript放在一个文件中,以便于操作。如果我将每段代码分离到单独的文件中,它将生成n
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="Width=device-Width, initial-scale=1">
<link href="menu-vertical.css" rel="stylesheet" type="text/css" />
<style>
:root {
--LeftSide: 50;
}
#menu-v li,
#menu-v a {
zoom: 1;
}
/* Hacks for IE6, IE7 */
#menu-v {
width: 180px;
/* Main Menu Item widths */
border: 1px solid #ccc;
border-top: none;
position: relative;
font-size: 0;
list-style: none;
padding: 0;
display: block;
margin-left: calc(var(--LeftSide) * 1px);
margin-top: 40px;
z-index: 9;
}
#menu-v ul {
width: 180px;
/* Main Menu Item widths */
border: 1px solid #ccc;
border-top: none;
position: relative;
font-size: 0;
list-style: none;
padding: 0;
display: block;
margin: 0;
z-index: 9;
}
/* Top level menu links style
---------------------------------------*/
#menu-v li {
background: #FFF url(bg.gif) repeat-x 0 2px;
list-style: none;
margin: 0;
padding: 0;
}
#menu-v li a {
font: normal 12px Arial;
border-top: 1px solid #ccc;
display: block;
/*overflow: auto; force hasLayout in IE7 */
color: black;
text-decoration: none;
line-height: 26px;
padding-left: 26px;
}
#menu-v ul li a {
line-height: 30px;
}
#menu-v li a.arrow:hover {
background-image: url(arrowon.gif);
background-repeat: no-repeat;
background-position: 97% 50%;
}
/*Sub level menu items
---------------------------------------*/
#menu-v li ul {
position: absolute;
width: 200px;
/*Sub Menu Items width */
visibility: hidden;
}
#menu-v a.arrow {
background-image: url(arrow.gif);
background-repeat: no-repeat;
background-position: 97% 50%;
}
#menu-v li:hover,
#menu-v li.onhover {
background-position: 0 -62px;
}
#menu-v ul li {
background: rgba(255, 255, 255, 0.86);
background-image: none;
}
#menu-v ul li:hover,
#menu-v ul li.onhover {
background: #FFF;
background-image: none;
}
</style>
<SCRIPT TYPE="text/javascript">
var alignWithMainMenu = false;
/* Vertical Menu - Developed by http://www.MenuCool.com/vertical/vertical-menu. Retaining this comment is required.*/
function initmenu() {
menu - v.style.setProperty('--LeftSide', ((document.documentElement.clientWidth / 2) - 470));
var e = document.getElementById("menuV2");
var i = e.offsetHeight;
var b = e.getElementsByTagName("ul");
var g = /msie|MSIE 6/.test(navigator.userAgent);
if (g) {
for (var h = e.getElementsByTagName("li"), a = 0, j = h.length; a < j; a++) {
h[a].onmouseover = function () {
this.className = "onhover";
};
h[a].onmouseout = function () {
this.className = "";
};
}
}
for (var a = 0; a < b.length; a++) {
var c = b[a].parentNode;
c.getElementsByTagName("a")[0].className += " arrow";
b[a].style.left = c.offsetWidth + "px";
b[a].style.top = c.offsetTop + "px";
if (alignWithMainMenu) {
var d = getParentOffsetRoot(c.parentNode, 0);
if (b[a].offsetTop + b[a].offsetHeight + d > i) {
var f;
if (b[a].offsetHeight > i) {
f = -d;
} else {
f = i - b[a].offsetHeight - d;
b[a].style.top = f + "px";
}
}
}
c.onmouseover = function () {
if (g) {
this.className = "onhover";
}
var a = this.getElementsByTagName("ul")[0];
if (a) {
a.style.visibility = "visible";
a.style.display = "block";
}
};
c.onmouseout = function () {
if (g) {
this.className = "";
}
this.getElementsByTagName("ul")[0].style.visibility = "hidden";
this.getElementsByTagName("ul")[0].style.display = "none";
};
}
for (var a = b.length - 1; a > -1; a--) {
b[a].style.display = "none";
}
}
function getParentOffsetRoot(a, b) {
if (a.id == "menuV2") {
return b;
} else {
b += a.offsetTop;
return getParentOffsetRoot(a.parentNode.parentNode, b);
}
}
if (window.addEventListener) {
window.addEventListener("load", initmenu, false);
} else {
window.attachEvent && window.attachEvent("onload", initmenu);
}
// function myfunction() {
// document.menu-v.style.setProperty('--LeftSide', ((document.documentElement.clientWidth / 2) - 470));
// }
// window.onload = myfunction;
</SCRIPT>
</head>
<body bgcolor="#bfb9b5">
<ul id="menu-v">
<li><a href="#">Item 1</a></li>
<li>
<a href="#">Item 2</a>
<ul class="sub">
<li><a href="vertical-menu#1">Vertical Menu</a></li>
<li><a href="vertical-menu#2">Vertical Menus</a></li>
</ul>
</li>
<li>
<a href="#">Item 3</a>
<ul class="sub">
<li><a href="#">Sub Item 3.1</a></li>
<li><a href="#">Sub Item 3.2</a></li>
<li><a href="#">Sub Item 3.3</a></li>
<li><a href="#">Sub Item 3.4</a></li>
<li><a href="#">Sub Item 3.5</a></li>
</ul>
</li>
<li><a href="#">Item 4</a></li>
<li>
<a href="#">Item 5</a>
<ul class="sub">
<li><a href="#">Sub Item 5.1</a></li>
<li>
<a href="#">Sub Item 5.2</a>
<ul class="sub">
<li><a href="#521">Vertical Menu 5.2.1</a></li>
<li><a href="#522">Vertical Menu 5.2.2</a></li>
<li><a href="#523">Vertical Menu 5.2.3</a></li>
<li><a href="#524">Vertical Menu 5.2.4</a></li>
<li><a href="#525">Vertical Menu 5.2.5</a></li>
</ul>
</li>
<li>
<a href="#">Sub Item 5.3</a>
<ul class="sub">
<li><a href="#">Sub Item 5.3.1</a></li>
<li><a href="#">Sub Item 5.3.2</a></li>
<li><a href="#">Sub Item 5.3.3</a></li>
<li><a href="#">Sub Item 5.3.4</a></li>
<li><a href="#">Sub Item 5.3.5</a></li>
<li><a href="#">Sub Item 5.3.6</a></li>
<li><a href="#537">Vertical Menus 5.3.7</a></li>
<li><a href="#538">Vertical Menus 5.3.8</a></li>
</ul>
</li>
</ul>
</li>
<li><a href="#">Item 6</a></li>
</ul>
</body>
</html>
function myfunction() {
document.menu-v.style.setProperty('--LeftSide', ((document.documentElement.clientWidth / 2) - 470));
}