单击图像地图中的锚点导致页面不必要地移动
我意识到我在这里还很新,但我有一个静态图像(Google 地图,但尚未使用 Google API),其中我创建了热点,它将提取位于地图左侧表格中的位置数据。然而,当单击热点时,页面会向下滚动,以便地图顶部(图像地图)位于屏幕顶部,即使信息直接位于地图旁边。
我假设这是因为锚点正在寻求在屏幕顶部加载。这没什么问题,只是我的标题现在被推出了屏幕。有没有办法让点击热点时页面不“移动”?
I realize I'm still pretty new here, but I have a static image (Google Map but not using Google API yet) in which I have created hotspots which will pull up location data that lives in a table to the left of the map. When a hotspot is clicked on, however, the page scrolls down so that the top of the map (the image map) is at the top of the screen even though the information is directly beside the map.
I am assuming this is because the anchor is seeking to load at the top of the screen. This would be okay except that my header is now pushed out of the screen. Is there a way for the page to not "move" when the hotspot is clicked?
The page can be seen here: http://www.mydillonsupply.com/default.aspx?page=customer&file=customer/disupp/customerpages/locations_page.htm
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不要使用默认的浏览器行为(对于锚标记),只需阻止它,然后自己滚动该框即可。我可以看到您已经在使用 jQuery。所以像这样的事情应该可以解决问题。
在该页面的上下文中进行测试有点困难,但是如果您仅使用其中的一部分设置小提琴,我相信这可以很容易地正常工作。
(编辑)-OP 设置了一个小提琴来解决问题,此处更新版本:
http://jsfiddle.net/H3Mz6 /9/
上面的代码已更新以反映实际的工作原理。我还将 id“the_div”添加到位置表周围的 div 中。它的工作原理如下:
1) 获取 # 之后的 href 部分 - 浏览器可能会添加完整的 url。
2)找到它,然后获取
next()
元素,因为不可见的锚标记会报告它们没有位置信息3) 然后获取
position().top
值,该值是该元素相对于其容器的位置4) 然后
scrollTop(..)
到它与 @colinross 的建议相反,图像映射没有不可扩展或不灵活的地方。恰恰相反,它们是您可以拥有不规则形状热点而不会遇到很多麻烦的唯一方法,并且可以为您提供强大的功能。要让它们执行您想要的操作,您所需要做的就是将您自己的鼠标悬停和/或单击事件绑定到这些区域,并调用
e.preventDefault()
。从那里开始一切都是你的了。是的,我喜欢图像地图,而且我还编写了一个 插件,它可以对图像地图做很多事情。所以我是相当有偏见的。但令我惊讶的是,人们为了避免它们而遇到的麻烦(比如绝对定位锚链接、复杂的 CSS 等等),因为它们非常简单、易于使用、适用于所有浏览器,并且比手动定位所有热点强大得多。 (如果没有图像图,或者没有一些疯狂的逻辑来自行确定鼠标的位置,无论如何,您都仅限于矩形区域!)。
Instead of using the default browser behavior (for anchor tags) just block it, and scroll the box yourself. I can see you are already using jQuery. So something like this ought to do the trick.
It's kinda hard to test in the context of that page, but if you set up a fiddle with just that part of it I am sure this could be made to work right pretty easily.
(edit) - OP set up a fiddle with the problem, updated version here:
http://jsfiddle.net/H3Mz6/9/
The code above has been updated to reflect what actually works. I also added the id "the_div" to the div surrounding the table of locations. Here's how it works:
1) get the part of the href after the # - the browser may add the full url.
2) find it, then get the
next()
element, because the invisible anchor tags will report that they have no location information3) then get the
position().top
value which is the postion of that element relative to it's container4) then
scrollTop(..)
to itContrary to @colinross's suggestion, there's nothing that's either non-extensible nor inflexible about imagemaps. Quite the opposite, they are the only way you can have irregularly shaped hotspots without going to a heck of a lot of trouble, and that gives you a lot of power. All you need to do to make them do whatever you want is bind your own mouseover and/or click events to the areas, and call
e.preventDefault()
. It's all yours from there.Yes, I like image maps, and I also wrote a plugin that does a heck of a lot with them. So I am fairly biased. But I am surprised by the trouble people go to in order to avoid them (like absolutely positioning anchor links, complex css, and so on) when they're dead simple, easy to use, work with every browser under the sun, and are far more powerful than positioning all your hotspots by hand. (And without an imagemap, or some crazy logic to figure out where the mouse is on your own, you're limited to rectangular areas anyway!).
发生跳转是因为您使用的图像地图正在处理对位置 #DillonLocationsMap 的点击。
这与使用
这样的页内锚点和
的其他链接的结果相同。到这里来。
说实话,我建议您不要使用图像映射,它们的可扩展性和可配置性都不是很好。
给鱼答案
将实际的
元素向上移动,例如移到 table#MainTable 元素之前。从技术上讲它仍然会跳跃,但你的标题应该仍然在视图中。
ps 页面布局表格让 pandas 哭泣;(
The jump is happening because you are using an image map that is processing a click to the location #DillonLocationsMap.
It is the same result as having an in-page anchor like
<a name="over_here" />
and a link elsewhere of<a href="#over_here">Go over here.</a>
I would suggest you don't use an image map to be honest and they are not very extensible nor configurable.
give the fish answer
Move the actual
<map>
element up, to for instance before the table#MainTable element. It will still technically jump, but your header should still be in view.p.s. Tables for page-layout makes pandas cry ;(
当您点击链接时,与该城市相关的
标签最终会滚动到
。
随后,这将与“顶部”链接完全相同,在“顶部”链接中您将
放置在页面顶部,然后页面底部的
返回顶部
。它将尝试将尽可能靠近视口顶部(例如:http://mix26.com/demo/local_scroll/index.html)。
你可以尝试这样的事情(在这里找到):
When you click on the link, your
<a name="Nashville"></a>
tag relating to said city end up scrolling to the top of your<!-- table containing locations -->
.Subsequently, this will work the exact same way as with a "Top" link where you place an
<a name="TOP"></a>
at the top of your page and then a<a href="#TOP">Back to top</a>
at the bottom of your page. It will try to put the<a name="Nashville">
as close to the top of the viewport as possible (example: http://mix26.com/demo/local_scroll/index.html).You could try something like this (found here):