What is CDATA in HTML?

This question already has an answer here: When is a CDATA section necessary within a script tag? 15 answers All text in an XML document will be parsed by the parser. But text inside a CDATA section will be ignored by the parser. CDATA - (Unparsed) Character Data The term CDATA is used about text data that should not be parsed by the XML parser. Characters like "<" and &q

什么是HTML中的CDATA?

这个问题在这里已经有了答案: 在脚本标记中何时需要CDATA部分? 15个答案 解析器将解析XML文档中的所有文本。 但是CDATA部分中的文本将被解析器忽略。 CDATA - (未解析)字符数据 术语CDATA用于不应被XML解析器解析的文本数据。 像“<”和“&”这样的字符在XML元素中是非法的。 “<”将产生一个错误,因为解析器将其解释为新元素的开始。 “&”将产生错误,因为解析器将其解释为字符实体的开始。 一些文本

What is Node.js?

I don't fully get what Node.js is all about. Maybe it's because I am mainly a web based business application developer. What is it and what is the use of it? My understanding so far is that: The programming model is event driven, especially the way it handles I/O. It uses JavaScript and the parser is V8. It can be easily used to create concurrent server applications. Are my un

什么是Node.js?

我没有完全得到Node.js的全部内容。 也许这是因为我主要是一个基于Web的商业应用程序开发人员。 它是什么以及它的用途是什么? 我迄今为止的理解是: 编程模型是事件驱动的,尤其是它处理I / O的方式。 它使用JavaScript,解析器是V8。 它可以很容易地用来创建并发的服务器应用程序。 我的理解是否正确? 如果是的话,那么evented I / O有什么好处,它只是更多的并发性的东西? 另外,Node.js的方向是成为像基于Ja

Read line break in a string with JavaScript

Possible Duplicate: Replace all line break in a string with <br /> tag in javascript How can I read the line break from a value with JavaScript and replace it with a <br /> tag? Example: var a = "This is man. Man like dog." I would like my result to look something like var a = "This is man.<br />Man like dog."; var newString=oldString.replace(/n/g,"<br />");

用JavaScript读取一个字符串中的换行符

可能重复: 用JavaScript中的<br />标记替换字符串中的所有换行符 如何从JavaScript中读取换行符并将其替换为<br />标签? 例: var a = "This is man. Man like dog." 我希望我的结果看起来像 var a = "This is man.<br />Man like dog."; var newString=oldString.replace(/n/g,"<br />"); 要完成:我遇到了' n'不起作用的情况,在我使用的情况下: someString.replace(/n/g,'&l

Load and execution sequence of a web page?

I have done some web based projects, but I don't think too much about the load and execution sequence of an ordinary web page. But now I need to know detail. It's hard to find answers from Google or SO, so I created this question. A sample page is like this: <html> <head> <script src="jquery.js" type="text/javascript"></script> <script src="abc.js" typ

加载和执行一个网页的顺序?

我已经完成了一些基于Web的项目,但是我并不太关心普通网页的加载和执行顺序。 但现在我需要知道细节。 很难找到Google或SO的答案,所以我提出了这个问题。 示例页面如下所示: <html> <head> <script src="jquery.js" type="text/javascript"></script> <script src="abc.js" type="text/javascript"> </script> <link rel="stylesheets" type="text/css" href="abc.css"&

css: how to remove pseudo elements (after, before, ...)

I would like to use a switch for the layout of paragraph tags on a webpage. I use the after pseudoelement p:after {content: url("../img/paragraph.gif");} Now i need to remove this css code from the page. How can this be done easily (jquery is already used on the page)? (i do not want to include or remove files containing css) p:after { content: none; } none is the official value to set

CSS:如何删除伪元素(之后,之前...)

我想在网页上使用开关来布置段落标签。 我使用后伪元素 p:after {content: url("../img/paragraph.gif");} 现在我需要从页面中删除这个CSS代码。 这怎么能轻松完成(jquery已经在页面上使用了)? (我不想包含或删除包含css的文件) p:after { content: none; } 没有什么是正式的价值来设置内容,如果指定,什么都不是。 http://www.w3schools.com/cssref/pr_gen_content.asp 你需要添加一个css规则来删除after

Insert four spaces instead of tab

I am trying to insert four spaces when the tab key is pressed. I was using the following code (see spaces = "t" ), but when I switch it to spaces = " " only one space is inserted when I press tab. I also tried " " + " " + " " + " ": $(function () { $('textarea').keydown(function(e) { var keyCode = e.keyCode || e.which; if (

插入四个空格而不是制表符

我试图按Tab键时插入四个空格。 我正在使用下面的代码(请参阅spaces = "t" ),但是当我将它切换到spaces = " "时,按Tab键时只插入一个空格。 我也试过“”+“”+“”+“”: $(function () { $('textarea').keydown(function(e) { var keyCode = e.keyCode || e.which; if (keyCode == 9) { e.preventDefault(); var start = $(this).get(0).selectionStart; var end = $(this).g

How to dynamically change a web page's title?

I have a webpage that implements a set of tabs each showing different content. The tab clicks do not refresh the page but hide/unhide contents at the client side. Now there is a requirement to change the page title according to the tab selected on the page ( for SEO reasons ). Is this possible? Can someone suggest a solution to dynamically alter the page title via javascript without reloadin

如何动态更改网页的标题?

我有一个网页,实现了一组标签,每个标签显示不同的内容。 标签点击不会刷新页面,而是隐藏/取消隐藏客户端的内容。 现在需要根据页面上选择的标签更改页面标题(出于搜索引擎优化的原因)。 这可能吗? 有人可以建议一个解决方案,通过JavaScript动态改变页面标题,而不需要重新加载页面? 更新 :按照SearchEngineLand上的评论和引用,大多数网络爬虫将索引更新后的标题。 下面的答案已经过时。 但代码仍然适用。

Show/hide text box on check/uncheck of a checkbox in richfaces 4

I was working in Richfaces 4 where i had a requirement that, there's a checkbox & if someone checks it, the boolean value should be stored in a boolean variable in the backing bean without the form being submitted. And according to the value of that variable in backing bean, a text box should be rendered. The coding is somewhat like this:- <h:selectBooleanCheckbox id="test" onclick=

在richfaces 4中选中/取消选中复选框时显示/隐藏文本框

我在Richfaces 4中工作,在那里我有一个要求,有一个复选框,如果有人检查它,布尔值应该存储在支持bean中的布尔变量中,而不需要提交表单。 根据backing bean中该变量的值,应该呈现一个文本框。 编码有点像这样: - <h:selectBooleanCheckbox id="test" onclick="jsRender()" onchange="document.getElementById('formName:test').checked == true ? #{bean.setChecked(true)} : #{bean.setChecked(false)}" /> <

Why Web Audio API isn't supported in nodejs?

I understand Web Audio API is a client side feature but nodejs is based on V8 Chrome client side implementation of ECMAScript, which include Web Audio API. Why there is no complete support of Web Audio API in nodejs ? Is it because AudioContext is based on the global window object ? Am I missing a point here ? Is there a plan to make it available in the future ? Node.js doesn't supp

为什么Nodejs不支持Web Audio API?

我了解Web Audio API是客户端功能,但nodejs基于ECMAScript的V8 Chrome客户端实现,其中包括Web Audio API。 为什么nodejs中没有完整的Web Audio API支持? 是否因为AudioContext基于全局窗口对象? 我在这里错过了一点吗? 是否有计划在将来提供? Node.js不支持Web Audio,因为它不是JavaScript语言本身的一部分 - 它是一个独立的Web平台JavaScript API。 您可以将它想象为Web Workers, requestAnimationFrame或X

Reply link, auto addition of text to textarea in XHTML Strict?

I'm trying to add a link next to each comment on my blog, where when you click on the word "Reply", "@Name" automatically adds to the comment form's textarea below (it also jumps to the form by anchor link). This is what I'm currently using: <script type="text/javascript"> /* <![CDATA[ */ function reply(text) { document.form.comment.value += text; }

回复链接,在XHTML Strict中自动添加文本到textarea?

我试图在我的博客上的每条评论旁边添加一个链接,当您点击单词“回复”时,“@Name”会自动添加到下面评论表单的textarea(它也会通过锚链接跳转到表单) 。 这是我目前使用的: <script type="text/javascript"> /* <![CDATA[ */ function reply(text) { document.form.comment.value += text; } /* ]]> */ </script> 并为每个链接(页面倍数)... <a href="#form" onclick="reply('@<?php echo $n