CSS Div 锚点滚动太远
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Div anchors scrolling too far
提问by Koen027
I'm using a static bar at the top of my site, about 20px high. When I click an anchor link(for those who don't know, the navigation on wikipedia works like that. Click a title and the browser goes down to it) part of the text disappears behind that top bar.
我在我的网站顶部使用了一个静态栏，大约 20 像素高。当我点击一个锚链接（对于那些不知道的人，维基百科上的导航是这样工作的。点击一个标题，浏览器就会转到它）部分文本消失在顶部栏后面。
Is there any way to stop this from happening? I'm not in a position where I can use an iFrame. Onlything I can think of is make it scroll back a bit each time, but is there another way? Some CSS setting to manipulate the body or something?
有没有办法阻止这种情况发生？我无法使用 iFrame。我唯一能想到的就是让它每次都向后滚动一点，但还有其他方法吗？一些CSS设置来操纵身体还是什么？
采纳答案by Christoph
To fix this with CSS you can add a padding to the Elements you want to jump to:
要使用 CSS 解决此问题，您可以向要跳转到的元素添加填充：
Alternatively, you could add a border:
或者，您可以添加边框：
div{
height: 650px;
background:#ccc;
/*the magic happens here*/
border-top:42px solid #fff;
}
ul{
top: 0;
width: 100%;
height:20px;
position: fixed;
background: deeppink;
margin:0;
padding:10px;
}
li{
float:left;
list-style:none;
padding-left:10px;
}
div:first-of-type{
margin-top:0;
}<!-- content to be placed inside <body>…</body> -->
<ul>
<li><a href="#s1">link 1</a>
<li><a href="#s2">link 2</a>
<li><a href="#s3">link 3</a>
<li><a href="#s4">link 4</a>
</ul>
<div id="s1" class="first">1</div>
<div id="s2">2</div>
<div id="s3">3</div>
<div id="s4">4</div>However, this is not always applicable.
然而，这并不总是适用。
For a javascript solution you could use a click event attached to the anchor elements that scrolls an adjusted amount of pixels like following:
对于 javascript 解决方案，您可以使用附加到锚元素的点击事件，滚动调整后的像素数量，如下所示：
document.querySelector("a").addEventListener("click",function(e){
// dynamically determining the height of your navbar
let navbar = document.querySelector("nav");
let navbarheight = parseInt(window.getComputedStyle(navbar).height,10);
// show 5 pixels of previous section just for illustration purposes
let scrollHeight = document.querySelector(e.target.hash).offsetTop - navbarheight - 5;
/* scrolling to the element taking the height of the static bar into account*/
window.scroll(0,scrollHeight);
/*properly updating the window location*/
window.location.hash = e.target.hash;
/* do not execute default action*/
e.preventDefault();
});nav{
position:fixed;
top:0;
left:0;
right:0;
height:40px;
text-align:center;
background:#bada55;
margin:0;
}
a{
display:block;
padding-top:40px;
}
#section1{
height:800px;
background:repeating-linear-gradient(45deg,#606dbc55,#606dbc55 10px,#46529855 10px,#46529855 20px);
}
#section2{
height:800px;
background:repeating-linear-gradient(-45deg,#22222255,#22222255 10px,#66666655 10px,#66666655 20px);
}<nav>static header</nav>
<a href="#section2">jump to section 2</a>
<div id="section1">Section 1</div>
<div id="section2">Section 2</div>回答by FredTheLover
You could just use CSS without any javascript.
您可以只使用 CSS 而不使用任何 javascript。
Give your anchor a class:
给你的主播上课：
<a class="anchor"></a>
You can then position the anchor an offset higher or lower than where it actually appears on the page, by making it a block element and relatively positioning it. -250px will position the anchor up 250px
然后，您可以通过将锚定为块元素并对其进行相对定位，将锚定为比它实际出现在页面上的位置高或低的偏移量。-250px 将定位点向上 250px
a.anchor{display: block; position: relative; top: -250px; visibility: hidden;}
By Jan see offsetting an html anchor to adjust for fixed header
由 Jan 查看偏移 html 锚点以调整固定标题
回答by Ana
CSS-only: it's a little dirty, but :target {padding-top: 20px;}would work if you are linking to a block element(I assumed you do, since your question says div). However, it might not look so good when you scroll manually afterwards. Example http://dabblet.com/gist/3121729
CSS-only：它有点脏，但如果你链接到块元素:target {padding-top: 20px;}会起作用（我假设你这样做，因为你的问题是 div）。但是，当您之后手动滚动时，它可能看起来不太好。示例http://dabblet.com/gist/3121729
Still, I think that using a bit of JavaScript to fix this would be nicer.
不过，我认为使用一些 JavaScript 来解决这个问题会更好。
回答by PJ Brunet
I had the same problem. Here's a jQuery solution
我有同样的问题。这是一个 jQuery 解决方案
$('a[href^="#"]').on('click',function (e) {
e.preventDefault();
var target = this.hash;
var $trget = $(target);
// Example: your header is 70px tall.
var newTop = $trget.offset().top - 70;
$('html, body').animate ({
scrollTop: newTop
}, 500, 'swing', function () {
window.location.hash = target;
});
});
回答by RAN
Try with window.scrollBy(xnum,ynum);
试试 window.scrollBy(xnum,ynum);
xnum: How many pixels to scroll by, along the x-axis (horizontal) ynum: How many pixels to scroll by, along the y-axis (vertical)
xnum：沿 x 轴（水平）滚动多少像素 ynum：沿 y 轴（垂直）滚动多少像素
For example: http://www.w3schools.com/js/tryit.asp?filename=try_dom_window_scrollby
例如：http: //www.w3schools.com/js/tryit.asp?filename=try_dom_window_scrollby
