Yesterday I joined the Brooklyn Bird Club for our annual trip to Western New Jersey, specifically Hyper Humus, a relatively recently discovered hot spot. It started out as a nice winter morning when we arrived at the site at 7:30 A.M., progressed to Spring around 10:00 A.M., and reached early summer by 10:15.
Seems you can now go href="http://www.wired.com/science/discoveries/news/ 2007/04/cone_sf">bird watching via the Internet. I haven't been able to test it out yet (20 user limit apparently) but this is certainly cool. Personally, I can't imagine it replacing actually being out in the field by any small amount. On the other hand, I've always found it quite sad to meet senior birders who are no longer able to hold binoculars steady or get to the park. I can imagine this might be of some interest to them. At least one elderly birder did a big year on TV, after he could no longer get out so much. This certainly tops that.
Yesterday I joined the Brooklyn Bird Club for our annual trip to Western New Jersey, specifically Hyper Humus, a relatively recently discovered hot spot. It started out as a nice winter morning when we arrived at the site at 7:30 A.M., progressed to Spring around 10:00 A.M., and reached early summer by 10:15.
Seems you can now go href="http://www.wired.com/science/discoveries/news/ 2007/04/cone_sf">bird watching via the Internet. I haven't been able to test it out yet (20 user limit apparently) but this is certainly cool. Personally, I can't imagine it replacing actually being out in the field by any small amount. On the other hand, I've always found it quite sad to meet senior birders who are no longer able to hold binoculars steady or get to the park. I can imagine this might be of some interest to them. At least one elderly birder did a big year on TV, after he could no longer get out so much. This certainly tops that.
The .xf-value selector used here styles the input field value but not its label. This is actually inconsistent with the current CSS3 draft. The example really should use the ::value pseudo-class instead like so:
HTML 5中过多地使用dt元素来标记谈话者，同时也过多地使用dd元素用语标记谈话内容。这使得网页内容在较原始的浏览器上也能显示得还算说得过去。表7是 伽利略的著名对话的片断，题目是"关于两个主要世界体系的对话" 。
表7 HTML 5中伽利略的对话
这个元素的确切语意尚有争论。一些人希望在dialog元素内部嵌入附加的非对话文本（比如舞台指示）such as stage directions)，而另一些人则对dt 和 dd的过多的使用感到不满意。但几乎所有人都认为dialogue富有一些语意是件好事，尽管他们在确切的语意上还没达成一致。
内联（inline）的语义元素
HTML 4有5个不同的行内元素，他们所代表计算机编码变量（variations of computer code）只有细微差别。他们是var, code, kbd, tt, 和samp。然而,在HTML 4中没有代表时间、数字、讽刺语这些基础特性的元素。 HTML 5 的目标是改变这种技术专家与普通作者之间的不平衡，于是它引入了一些新的行内元素。
The Great Egret (also known as the American Egret) is a large white wading bird found worldwide. The Great Egret flies with slow wing beats. The scientific name of the Great Egret is Casmerodius albus.
这个元素的名字目前还有争论。它可能会在软件说明书 发布之前由 m改为 mark。
time
time元素代表一个具体的历史时刻。如 5:35 P.M., EST, April 23, 2007。举例：
I am writing this example at .
time元素帮助浏览器等识别HTML页面中的时间。对于这个元素的格式并没有特殊要求。但是，所有的 time 元素都要有一个日期时间属性,用一种机器可识别的形式表达时间，像这样：
I am writing this example at .
meter元素代表的是有界数值（a numeric value in a specified range）。比如，它可用来表示工资、法国大选中Le Pen的投票支持率或是测验的分数。在此，我用meter来标记一些数据，他们有关程序员的，发表在2007软件发展中。
An entry level programmer in Silicon Valley can expect to start around $90,000 per year.
meter元素用来帮浏览器和其他客户端识别在HTML页面中出现的所有数值。这个元素的内容并不需要使用特定的格式。但是，所有的meter元素可以有多达六个属性，它们为这个数量提供信息，所用的形式更加便于机器识别。它们是： value min low high max optimum
音频在网络上很盛行，但它们大多是专属的。YouTube 使用Flash, Microsoft 使用 Windows Media, Apple 使用 QuickTime。嵌入的这种音频内容在一种浏览器下可读，在另一个浏览器下则不行。最终，WhatWG提议开发video 这个新元素，使它可以嵌入专属的音频格式。比如，我可以像这样在我的QuickTime电影中嵌入a Sora in Prospect Park：
label属性可以为菜单命名。比如表14是一个编辑菜单
表14 HTML 5 中的编辑菜单
菜单可以作为其他菜单的附属，来制作多级菜单。
总结：
HTML 5 是未来网络的一部分。它的新元素使我们能够以更清楚、简单的方式把网页编辑得更明显易懂。Div和span仍然有用，但它们的用处已经远不如从前。很多网页可能不再需要使用它们了。
京公网安备 11010802041100号