Javascript HTML Onclick不';不能使用负z指数
我在图像部分放置了一个Javascript HTML Onclick不';不能使用负z指数,javascript,jquery,html,css,Javascript,Jquery,Html,Css,我在图像部分放置了一个负z索引属性,以防止它与导航栏重叠,从而导致超链接无法正常工作。在我解决了这个问题之后,我意识到我的幻灯片的左右按钮都不起作用了。允许按钮在负z索引下工作有任何帮助吗?我在下面粘贴的所有代码都是必需的 HTML <div id="container"> <header> <h1><b>Seattle</b>&Metropolitan</h1> <na
负z索引
属性,以防止它与导航栏重叠,从而导致超链接
无法正常工作。在我解决了这个问题之后,我意识到我的幻灯片的左右按钮都不起作用了。允许按钮在负z索引下工作有任何帮助吗?我在下面粘贴的所有代码都是必需的
HTML
<div id="container">
<header>
<h1><b>Seattle</b>&Metropolitan</h1>
<nav>
<ul>
<li><a href="about.html">About</a></li>
<li>Buildings</li>
<li id="contact">Contact Us</li>
</ul>
</nav>
</header>
</div>
<div class="image-section">
<img src="img/seattleskyline.jpg" alt="Seattle Skyline" id="center-image" />
<div id="caption"><div id="caption-text">A panoramic view of 1201 Third Avenue at night</div></div>
<button id="sliderLeft" onclick="left();"></button>
<button id="sliderRight" onclick="right();"></button>
</div>
<br><br>
<div class="content">
Seattle's history can be traced back to the 1850s, when pioneers and natives started building a great city filled with a diverse culure, beautiful scenery, and a vibrant enviornment. The metropolitan area of Seattle now is a high-tech hub, in which four Fortune 500 companies reside: <a href="http://www.amazon.com/" alt="Amazon Website"><b>Amazon.com (#49)</b></a>, <a href="http://www.starbucks.com" alt="Starbucks Website"><b>Starbucks (#208)</b></a>, <a href="http://shop.nordstrom.com" alt="Nordstrom Website"><b>Nordstrom (#227)</b></a>, and <a href="http://www.expeditors.com" alt="Expeditors Website"><b>Expeditors International (#428)</b></a>.
</div>
JS
@charset "utf-8";
#container
{
width: 75%;
margin-left: auto;
margin-right: auto;
}
header h1
{
font-size: 38px;
float: left;
font-weight: 100;
}
header nav ul
{
list-style-type: none;
margin: 0;
vertical-align: middle;
line-height: normal;
float: right;
z-index: 999;
}
header nav ul li
{
line-height: 105px;
display: inline;
padding: 45px;
font-size: 22px;
font-weight: 100;
}
header nav ul li a
{
color: black;
text-decoration: none;
}
#center-image
{
width: 100%;
height: 480px;
}
#contact
{
padding-right: 0;
}
.image-section
{
margin-left: auto;
margin-right: auto;
width: 75%;
position: relative;
text-align: center;
}
.image-section #caption
{
position: absolute;
display: none;
bottom: 4px;
width: 100%;
text-align: center;
color: white;
background: #474747;
height: 50px;
line-height: 50px;
opacity: 0.8;
font-size: 20px;
}
.image-section button
{
outline: 0;
}
.image-section #sliderLeft
{
position: absolute;
display: none;
width: 25px;
height: 100px;
top: 50%;
margin-bottom: 50px;
left: 0;
opacity: 0.7;
filter: alpha(opacity=70);
border: 0;
}
.image-section #sliderRight
{
position: absolute;
display: none;
width: 25px;
height: 100px;
top: 50%;
margin-bottom: 50px;
right: 0;
opacity: 0.7;
filter: alpha(opacity=70);
border: 0;
}
var images = ["img/seattleskyline.jpg", "img/spaceneedle.jpg", "img/ferriswheel.jpg"]
var captions = ["A panoramic view of 1201 Third Avenue at night", "The Seattle's landmark Space Needle", "The Iconic Great Wheel"]
var index = 0;
function left() {
index -= 2;
if (index < 0) {
index = images.length;
}
changeImage();
}
function right() {
changeImage();
}
function changeImage() {
index++;
if (index > images.length - 1) {
index = 0;
}
var targetImage = document.getElementById("center-image");
var caption = document.getElementById("caption-text");
$("#center-image").fadeOut(1000, function() {
targetImage.src = images[index];
$("#center-image").fadeIn(1000);
});
$("#caption-text").fadeOut(1000, function() {
caption.innerHTML = captions[index];
$("#caption-text").fadeIn(1000);
});
}
$(document).ready(function() {
$("#sliderRight").fadeIn(1000);
$("#sliderLeft").fadeIn(1000);
$("#caption").fadeIn(1000);
setInterval(changeImage, 7000);
});
var images=[“img/seattleskyline.jpg”、“img/spaceneedle.jpg”、“img/ferriswheel.jpg”]
var captions=[“第三大道1201号夜间全景”、“西雅图地标性的太空针”、“标志性的大轮子”]
var指数=0;
函数左(){
指数-=2;
如果(指数<0){
索引=图像长度;
}
changeImage();
}
功能权限(){
changeImage();
}
函数changeImage(){
索引++;
如果(索引>images.length-1){
指数=0;
}
var targetImage=document.getElementById(“中心图像”);
var caption=document.getElementById(“标题文本”);
$(“#中心图像”).fadeOut(1000,函数(){
targetImage.src=图像[索引];
$(“#中心图像”).fadeIn(1000);
});
$(“#标题文本”).fadeOut(1000,函数(){
caption.innerHTML=字幕[索引];
$(“#标题文本”).fadeIn(1000);
});
}
$(文档).ready(函数(){
$(“#sliderRight”).fadeIn(1000);
$(“#sliderLeft”).fadeIn(1000);
$(“标题”).fadeIn(1000);
设置间隔(changeImage,7000);
});
将标题导航的CSS
更改为:
header nav ul
{
list-style-type: none;
margin: 0;
vertical-align: middle;
line-height: normal;
float: right;
z-index: 999;
position: relative; /* add this */
}
z-索引
在位置
为相对
或绝对
时生效,因此如果您想将其与css一起使用
添加位置:相对代码>如下所示,以便z-index
s生效
header nav ul
{
position: relative;
z-index: 9999;
}
.image-section
{
position: relative;
}
.image-section #sliderLeft
{
z-index: 999;
}
.image-section #sliderRight
z-index: 999;
}
与其在你的图像部分上放一个负数索引,为什么不在你的导航栏上放一个大的正数索引呢?我试过了,但没有用。这是因为这样做,你就有效地把元素放在了导航栏下,所以当你点击时,你并不是真的点击了项目检查它是否对所有链接都有效,在小提琴中,它只适用于我的第一个菜单项。我在试图解决该问题时删除了它。你也是这样吗?对我来说都是这样。我觉得很好。