ASP.NET开发者使用jQuery应该了解的几件事情
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下面这几点希望能够帮你加快你的学习。 1.把selectors当作asp.net中的sets。 在asp.net的世界,通过一个查询找到一系列控件是非常少见的.相反我们比较习惯于通过一个唯一的ID来找到一个控件。当然,在jQuery中这个也是没有问题的,但是jQuery的选择功能相对更加神奇。 使用jQuery的selectors能够很容易定位到一个set的元素,相对来说比在asp.net中使用迭代的规则来找到一个set的元素更加清晰和易于表达。 2.使用CSS类来代替styling。 另外一个不直观的技术是把CSS类作为一个flag。与'selector engin'一样,'flag'类也是个令人惊喜的东西。 举个例子来说吧,最近有个活动是做一个在线的能够与客户端互动的纸牌游戏。一个需求是纸牌需要有个onclick haddler在某个特定时间,不过这些事件只针对那些face down(脸朝下)的。作为一个.net的开发者我立刻能够想到的办法是让这些纸牌在客户端通过一个collection来编号.然后我可以在需要的时候给这个数据一个onclick handlers。这个固然可以,不过难以维护且有点凌乱。 现在如果我使用CSS类来实现，face up的纸牌我通过addclass方法为它们加上一个'flipped'类,然后可以通过一个简单的 '$(".card:not(.flipped)")'选择那些face down的纸牌。使用jQuery的click(fn)功能能够让我使用几行代码就实现这个功能。更重要的是它更容易理解和读取。 下面附上几点英文原版的: 3。Understand unobtrusive JavaScript. Coming from the save-compile-reload paradigm of statically typed server-side development, it's natural to approach client-side development in a similar fashion. While you certainly can write client-side code that way, it's akin to working blindfolded when you consider the alternatives. Since JavaScript is usually interpreted by a browser, the browser is one of the best debugging environments available. In particular, a JavaScript “console” is terrific for interactively interrogating the DOM, testing jQuery selectors against actual markup, and refining JavaScript code in real-time. My preferred browser-based tool is the Firebug addon to Firefox. I cannot praise this Firebug highly enough. It has revolutionized how I approach client-side development, both of JavaScript and of CSS. If you prefer Internet Explorer, IE8's updated developer tools are also very capable in this department. Whatever your browser of choice, I urge you to give these utilities a try when debugging client-side functionality. Once you become proficient with one of these tools, you'll be amazed that you ever developed client-side code without it. Get the VSDOC. Even though browser-based tools are great for debugging, an ASP.NET developer's primary editor is still going to be Visual Studio. When writing jQuery code in Visual Studio, having proper Intellisense can make a tremendous difference in productivity. The discoverability that Intellisense provides is especially beneficial when you're unfamiliar with jQuery's API. As part of the official support for jQuery, Microsoft provides a documentation file to provide jQuery Intellisense inside Visual Studio 2008. This is provided through what's called a vsdoc file, and is available on the jQuery download page (via the “Documentation: Visual Studio” links). Jeff King has assembled an excellent FAQ to help you get Visual Studio 2008's JavaScript Intellisense working: （编辑：晋中站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
