Convert Wml to XHtml ?
The best way to accomplish this is through the use of XSL/XSLT transformation. While a definition and reference of XSL/XSLT is beyond the scope of an answer on yahoo, I can help point you to some sites which can help. The idea behind it is that XSL can be used to "transform" XML style tags to HTML (Or XHTML since it is HTML held to an XML style) or can be used to transform formatted data to another format. You could translate ordinary text into WML for instance with it. It is pretty straight forward and not that hard to learn. Below are some sites that can help with step by step examples to put you on the right track. Hope this helps! Enjoy!
How is an .xhtml file opened?
Your question isn't really clear. What do you mean by open?If what you mean is How can an xhtml file be edited, then it can be opened with almost and text editing software, including notepad. Just don't use a word processing software like MSWord. Likewise, if what you mean is,How can it be displayed as a webpage? Then all you have to do is right click on the file and open it with any Web Browser available, for example Google Chrome can be used. If you don't mean any of the above , you should re-edit your question to make it clearer.
Need XHTML validation help?
It sounds as if you got the warning about the lack of an xml mime-type? If that's it, then not to worry. Yer code's valid. If you were to correct that problem intensely and (heh, heh) strictly, your html file wouldn't be available to all browsers (notably, IE). The validator should give you a line number in your file, to which it's referring. Else, make sure your stuff at top is intensely correct, a la: "http://www.w3.org/TR/xhtml11/DTD/xhtml1... and that you have one of these... Good luck! (OOPS later edit...I placed my 1.1 instead of your 1.0 strict doctype...you need to go into the W3 website and research THEIR recommended PRECISE doctype statement format, but if I remember correctly, it's the same but for changing 1.1 to 1.0 and "11" to "10")
What is the exact meaning and purpose of
tags in HTML/CSS?Div tags are used to describe content that cannot be properly described by other, more semantic tags. The div tag defines a section within an HTML or XHTML document. Proper HTML markup language requires that all elements describe the type of data contained within. For example, in HTML and XHTML, a p (paragraph) element should contain a paragraph of text, and an h1 element should contain the highest-level header of the page. In HTML and XHTML, span and div are the only elements that carry no innate semantic meaning, besides the logical grouping of the enclosed elements. In standard HTML, a div is a block-level element (and so visually isolates a section of a document on the page, in the same way as a paragraph. When it is labelled with class or id attributes, div elements can denote types of information otherwise indescribable with HTML. Ron
Which language should I learn after XHTML CSS, JavaScript and HTML5 CSS3?
Now you have to choose the field you have to step in. If you are looking to make a career in Web Development, you might get a good view from this answer.Web languages in 2017 are not same as they were before. They have got much more powerful and mature to find ways in different industries. Here, I will tell you a few ones you can opt for apart from being a web designer.Web Development and Web Applications and HTML5 Games.Android / iOS / Windows App development - all with one codeMicro-controllers using Espruino.Internet of Things - Though it requires a lot more programming.Talking about Web development, you know it, create websites that are dynamic, functional and respond to user queries. It includes Web Apps like Instagram, YouTube, Code Pen, Google Docs. You can also build games and all that stuff with HTML5.The languages you’ll have to figure out. Most people start with PHP. You should also go with PHP, but just to know enough how back-end works. Though most of the websites are based on PHP, but learning new technology will help you in long run. I would suggest you MEAN stack, since you already know Javascript. Otherwise Python (Great) and Ruby are good choice. Whatever you will choose, just stick to it… learn and explore as deep as you can.For App development, explore more about Adobe Phone Gap. It also requires good JavaScript’s knowledge. The main benefit is a single code can create apps for all Android, iOS, Windows and Blackberry (Not sure about latter one, but who cares about it).Don’t expect to create a game like Asphalt, but possibilities are limitless. Also, if you tempted to go with App development, keep in mind that these are Web Applications which will not run better than native code. If you want to do serious app development you can learn App Development.Micro-controllers with Javascript at this stage are not quite good from career perspective. It might give you a great feeling of satisfaction. However if you wish to learn more about it, visit Espruino - JavaScript for MicrocontrollersIoT is future. Just like Big Data took the world by storm, opportunities in IoT field will yield a rewarding career. If you are ready to sacrifice your comfort zone, you can start learning development tools for it.Rest depends on you and your skill levels. Web designing is not bad, but learning full stack development has more opportunities than creating dynamic websites.Good Luck :)
Does the site needs to be xhtml compliant to feature in Google top results?
Google wants to provide the most relevant websites to it's users regardless of coding issues. However, keep in mind that the competitiveness of ranking on page one is increasing and having a website riddled with coding issues can cause problems for users and for your ranking. My advice is to code your website to meet Google's webmaster guidelines and make sure your website is W3c Compliant. Doing both of these items will ensure your code will not now or in the future be a problem.
I have started to learn XHTML over HTML 5. Is it a bad decision?
Not necessarily, so long as you then go on to HTML 5 afterwards. Sure, the use of the 'fun' new semantics is a useful thing to know as its prevalence will only spread in the future. However, I personally don't like people learning it right off the bat. This is not due to a lack of support in older browsers, the more developers start leaving old browsers behind the more people will be inclined to upgrade, but more because of how forgiving HTML5 is. XHTML is the opposite, there are rigourous rules that need to be followed in terms of tag nesting, attribute setting and the like. In HTML5 though, it will allow you to improperly nest a tag, to not close off a tag before starting a new one, not need to explicitly set an attribute like autocomplete. This is great and much faster for people who are working with it, but if they then move onto something that isn't as forgiving, like CSS or pretty much any programming language, they'll find themselves pretty frustrated, wheras someone used to a stricter ruleset will not find them so bad.Of course, the new features of HTML5 are important to know, they are becoming more and more popular with each day. This does not mean that there is no point to learning XHTML, the rulesets you learn with it are still valid in HTML5 an result in cleaner, nicer code that a browser doesn't have to work through in order to ignore all the missed things that HTML5 allows.I still end my meta and img tags with a /> and set attributes like autocomplete="autocomplete" and I've never found it to be detrimental to developing, despite working with newer web tehnologies. So I would say no, it's not a bad idea to learn XHTML first, but you should still go on to HTML5 afterwards.