With the advent of HTML5 , a huge change took place and users were able to have a better user experience with the help of this version, the features of this version are constantly evolving, and over time, various elements are being added to it, each of which may become obsolete over time and no longer be used due to the fact that newer features can be considered as better solutions.As you know, updating is an important process, and you should always try to own the latest HTML version, so that you can make good use of all features in it, in the rest of this article, we are going to look at some of the features which you should no longer use in this version, but before that we need to introduce HTML5 to you briefly.
What is HTML5?
It is actually the latest version of HTML that can be used in order to add many features to the content, two of the most important ones, are the addition of audio files and also the image to different contents, which caused a lot of changes in the quality of contents, this changes became more apparent when these files were added to the various existing educational contents, due to the fact that these features can increase the possibility of better learning.In general, this version has many advantages compared to other versions which are offered, but you should be aware of its updates regularly and always try to continue your activities with the most up-to-date features provided, and you should also avoid using the obsolete tags to ensure that the quality of your site is not compromised, you should also keep in mind that today's browsers may no longer support the obsolete elements, so you can no longer use them, all of the mentioned points are going to be described in more detail in the rest of this article.
What are the features that you should not use in HTML5?
There are various elements which were being used by users in this version that have become obsolete due to the technological progress as well as the presentation of various features that can provide user a better user experience, you may still use elements of this version which are obsolete, so that here we are going to mention some of them in order to help you recognize them, so you can replace them with the ones that can work much better.
- HTML applet tag:
This program is actually a small one which is written in Java, and these days the use of this language is almost obsolete, despite the fact that in the past it was used to run web pages, and through this way you could execute images as well as various sounds, but today, the use of this element is obsolete and new ones are being used instead.
There are many programming languages and those who are interested in them try to have a lot of knowledge in different fields of each of the available languages, one of the most popular programming languages is JavaScript, which can allow different programmers to use it in order to enable the user to communicate with the content better and ultimately gain a positive user experience , there are various features in this language that any of them can add to the attractiveness of the existing content.One of these features in JS is a library which is called jQuery that can be used to code faster , which we are going to explain briefly below, but never forget that to be able to master the items mentioned in this article, it is necessary to increase your knowledge about HTML, CSS and JavaScript, as a result, you can refer to our website’s articles which have been written in this regard.
What is JavaScript?
It is one of the programming languages that is used to plan the behavior of web pages, and it is used along with other languages for the basic structure of web pages, if you want to turn the page into a page that the user can interact with, you have to use JS programming language, it can be used for different purposes, each of which is very important, and we need to focus more on learning them in programming, by mastering this language, it is possible to implement features that are very complex on the web, there are JS engines in various browsers, which are actually embedded by its scripts and can be used to convert the script into a language that can be understood by different devices.
What is jQuery?
It has a lot of fans which is in fact a JavaScript library that allows you to navigate files easily and access predefined features, with the help of it, it is possible to perform many complex tasks with just a few simple solutions, and with just one line of code you can achieve the goals that might need to be achieved by multiple lines of code.jQuery also simplifies a lot of complicated things from JavaScript, like AJAX calls and DOM manipulation, in the following, we are going to deal with hide-show and Fade methods.
These days, numbers and mathematics are being used in daily tasks such as shopping, sport, etc., in fact, these cases have formed a large part of our lives these days, you also know that computers, websites and various programs play an important role in people’s lives, so you can see the reason for the obsession with math and websites as well as various programs, ever since people were able to perform their mathematics calculations through computers as well as various websites, a great change has taken place in our lives, and we have seen how fast we can solve a complex problem.One of the most popular programming languages is JavaScript, which if you have mastered it, you would be also able to do mathematical calculations with the help of numbers in it, in this article we will discuss it more but before that we need to give a brief explanation of the JavaScript programming language.
What is JavaScript?
It is one of the programming languages that can be used for clean coding and with the help of which complex features can be implemented in a web page.
JavaScript Math Object:
You need to learn this section in order to do different calculations, in this case, the Math object is static, now in order to understand it better, consider the following example.
<! DOCTYPE html> <html> <body>
<h2> JavaScript Math.PI </h2>
<p> Math.PI returns the ratio of a circle's circumference to its diameter: </p>
The appearance of a page is of a great importance and HTML can help a lot of page owners in order to present their content on a page with a proper and attractive layout, technology is constantly evolving, and everything which depends on technology is getting better and better such as HTML, for example, the latest version of HTML was able to create a huge change, due to the fact that this version attracted more users to the pages and made them able to have a better user experience because of the ability to add video and audio files, so that the traffic to the website will increase as well as its ranking.In general, in order to fully master the types of tags and become familiar with basic coding, you need to increase your awareness of various fields, one of which is HTML Semantic, when you heard the word HTML Semantic, you may think about its meaning, in the following, we are going to discuss this topic as well as Semantic mark training, Semantic time and Semantic meter in HTML, so that you can be more aware of them which help you create your own page with more awareness.
HTML Semantic:
This phrase means that all the code that is written and the structures of the pages should be designed in a way that is understandable to human users, and also should be written in such a way that different devices can easily examine the page as well as its different parts such as title, content, etc., in order to distinguish pages from each other.When real users visit a page, they can easily realize that the sections are different with the help of changes which are made to the appearance of the text, for example the font, and so on, these days with the help of HTML Semantic as well as written codes, different servers can easily distinguish different parts of a page from each other, it should be also noted that HTML has some tags in which different devices can distinguish various parts of page from each other, but you definitely know that devices cannot do everything like human users, so they cannot distinguish many parts from each other.In the past, pages were much simpler than what they are now, so the problem which was mentioned above about the inability to recognize different parts of the site by various devices did not exist, but due to the advances that are happening every day, devices can no longer distinguish the difference between sections such as title, content, etc., and it is necessary to take all the actions in order to make the recognition possible for devices as well. CSS classes can separate the visual part from HTML coding, and have different titles for various classes, which can eventually provide a standard coding, there are different tags in coding, such as h1, p, image, etc., in which the relevant section must be placed, finally the page that uses such codes, can get a better score while measuring the standard coding, in the following, we are going to refer to some Semantic Elements in HTML for you and explain some of them briefly.
A replacement for stable channels used for Visual Studios used on the Mac.
Preview:
is also an alternative to the Alpha channel and Beta channel used for Visual Studios used on the Mac operating system .The Preview version of Visual Studio, which can be used on the Mac operating system, includes some versions and features. These versions and features are as follows:- Xamarin.Forms- Xamarin.Ios- Xamarin.Android - Xamarin Profiler- Xamarin Inspector
Xamarin Remote ios Simulator
Note:
When installing the Xamarin Preview version in Visual Studio, you can add the installation Nickname at the same time as installing the other versions, so that it can be displayed separately in the start menu.
How to install Preview in Visual Studio version 2019?
Note:
In order to be able to install the Preview in Visual Studio well, you must also remove some versions of the Preview. You can use visual studio installer to remove some versions of Preview.
How to remove some Preview versions from Visual Studio?
Using the Installer app, you can easily remove Xamarin from Visual Studio 2017 and Visual Studio 2019.1- Open the start menu.2- Select the Visual Studio Installer menu and click.3- In the window that opens to select the changes, select the Modify button and click.4- In the Workloads tab that opens, uncheck Mobile Development with .NET in the Mobile & Gaming section. This is called de-select.5- Click the Modify button again.6- De-select options are removed automatically by default by the Installer.
Note:
In order for the changes applied by the Installer to be recorded, Visual Studio 2017 must be closed.7- In order to be able to delete other options such as profiler and workbooks, you must refer to the Individual Components tab.8- In order to be able to completely remove Visual Studio, you must click on the three-line button next to the launch button to display the Uninstall option, and you can easily uninstall Visual Studio 2017.
If you are a little familiar with hackers, you know that these talented people only want to get whatever they want as soon as possible, and in this way, they remove any obstacle and do not allow anything to stop them achieving their goal, in fact, as security progresses, the methods they use in order to disrupt security improves as well, so they try to update their information in this field, and they never give up trying to achieve their goal, one of the most common method among hackers is SQL injection , which many of hackers use it to infiltrate various sites in order to access a lot of information through it, of course, site owners are trying to increase the security of their information by taking various measures which can help them in this way.
What is SQL injection?
One of the most common types of hacking methods is attacking sites, in which hackers use existing tools to investigate security vulnerabilities as well as existing coding problems, and ultimately, attack the system security through these ways, this method is very simple and even novice hackers can use it in order to access the information on the sites, weaknesses in web code can also indicate root access to web servers, which can lead to attacks on other network servers.In fact, SQL stands for Structured Query Language, which allows hackers to gain access to a lot of information, this attack can also disrupt firewalls, which ultimately let them achieve their purpose, and you should be aware that any form of web that is not properly encrypted may allow hackers to access your data by injecting SQL, it should be noted that hackers are very interested in this method and frequently use it in order to hack different systems.
Types of SQL Injection:
- In-band SQLi (Classic SQLi):
Two common types of this injection are Error-based SQLi and Union-based SQLi.
- Inferential SQLi (Blind SQLi):
Two types of this injection are Boolean-based (content-based) Blind SQLi and Time-based Blind SQLi.
The world of the Internet is vast and there are many sites that the owners of all of them are trying to create the best possible appearance for their sites, before the appearance of it, it is necessary to create the skeleton of all sites properly as well as using the correct and principled coding to create websites , after which it is possible to beautify the appearance of a site with the help of some factors.When you go to a store in order to buy something, at first, it is the appearance of that store which can attract you to it, so that you are encouraged to look for an item among the others carefully, as a result, you can choose the item you need as soon as possible, the same idea is true about the Internet, and as you know, there are many sites on the Internet that may be able to meet your needs, but it is up to you to choose one of them in order to get the desired answer.The most important factor that has a huge impact on your choice in the first step, is just like the situation which we have mentioned above about the appearance of a store which attracts you, so it is the appearance of the site that can persuade you to read or use it to do online shopping , various factors can help you in addition to a suitable website configuration, you should also create a beautiful appearance for it, which is one of the most essential factors of CSS, which will be discussed in more detail below.
What is CSS?
CSS stands for Cascading Style Sheets , in fact, it describes how HTML elements are displayed on various sites, simply put, if you think of HTML as the skeletons of a human body, CSS can be considered as the flesh and skin that ultimately make up a human appearance.It can be used to control the layout of multiple web pages at the same time, imagine how boring the web world would be, if CSS did not exist, and users would definitely be tired of visiting websites, and they would be unwilling to spend long hours in it, in order to get the answers to their questions.
What is the reason for this naming?
As we have mentioned above, CSS stands for Cascading Style Sheets, the reason for naming the first part is because of the codes that are from top to bottom by default just like cascading, the reason for naming the second part, is because it is possible to create a Style Sheet to specify the properties of the various components in the web pages.
All the effort that the owners of different sites have, is to be able to offer the best possible products and services to their customers in order to make them have a positive user experience after using the services available on the site , one of the features of HTML latest version is that it is possible to add audio as well as image files that can be used by users.Making a video is one of the most important things that can be presented to different users, especially if the content that is being created, is educational, so you need to learn how to make a video on web pages by using HTML5 , which we are going to explain to you in this regard.
What is HTML5?
As you know, this is the latest version of HTML, and in this version, you can add audio and video files to various contents, and if you do this, the user can get a positive user experience after viewing the web pages , which causes you to attract more users to your website due to the fact that they may suggest your site to their friends and finally the number of visitors and website ranking will increase over time , in which case the web owner can achieve a lot of success.
Learning to create video on web pages using HTML5:
The video element is used to embed a video on a web page, so you need to know more about its features, one of its features, is the controls attribute, which allows a video to be played, paused, and the volume of the video to be determined, for instance, when the users have to do something else while watching the video and need to stop it, they can get help from this attribute in order to stop the video.Another feature of the video tag is the source element, which allows the browser to select files that can be recognized, so it uses the file as soon as encountering the one that is in a recognizable format, so that if this element did not exist, it would not be possible for you to insert alternative video files, and the browser wouldn’t be able to do anything if it could not recognize the imported format, and finally the video would not be played, so all your efforts in the field of coding will be useless.Another feature that needs to be specified in the video tag is width and height, which by setting it, the browser can play the video at the specified width and height, videos may be available in a variety of formats, including MP4, WebM, Ogg, all of which may be supported by different browsers, or only one or two of them may be supported by browsers, in the following we are going to describe different browsers and the type of video format that they support.
In order for a site to be able to attract the attention of various users, it must have an attractive appearance that can make the users choose it from different sites, to create an attractive appearance for a website , you can use programming languages and write different codes for existing elements with the help of them to attract more and more users.One of the languages that programmers as well as site designers use a lot, is CSS, which can be used in order to add shadows and other features to existing content, which we are going to discuss in the following.
What is CSS?
It stands for Cascading Style Sheets , in fact, it describes how HTML elements are displayed on various sites, simply put, if you think of HTML as the skeletons of a human body, CSS can be considered as the flesh and skin that ultimately make up a human appearance, due to the fact that it can be used to control the layout of multiple web pages at the same time.If there wasn’t the ability to use CSS, you cannot imagine how unattractive the web world would be, and users would definitely be tired of navigating it and unwilling to spend long hours throughout the day in it, in order to get the answers, they want, in the following, we are going to discuss how to create shadows, fonts, as well as text individually.
In this case, we will teach you the way to add a shadow to a text , which you may only want to add a horizontal or vertical shadow, or use colors and other available features, it is also possible that add all or more items to your text, and here's how to add each of the shadows to your text, in one of the available modes it is possible to give only a simple shadow to the text horizontally and vertically.
And use some features of Android systems so that we can finally change the fonts used in Android systems and applications (change font in android app ). Different types of fonts can be used in Android systems. In this tutorial, we will learn how to change fonts and apply related settings. If you want to know how to change fonts in Android systems and applications, it is recommended that you follow this article.
Here is what you will learn in this tutorial:
- How to change fonts in Android apps - How to change Widget fonts in XML- How to set fonts using Typeface- Use the Calligraphy library to change all fonts in the program- Review and answer common problems and questions in Android programming with their solutions
How to change Widget fonts in XML?
In order to be able to change the fonts and use different types of fonts available in Android systems, we must do the following.
change font in android studio project
1- Open a new project in Android Studio and select the desired name for it. The custom name selected in this tutorial is CustomFont. (change font in android studio)2- The type of activity that we must choose in this part of the training for this project is Empty Activity.3- It should be noted that font change settings can be applied without using Java language and methods, which is why there is no emphasis on choosing Java language in this part of training and project creation.4- With the introduction of API 26 in the three versions of Android, a new feature has been added that can specify different types of fonts for the widget. Specifying fonts for the widget using this method eliminates the need to use Java methods.5 - n this method of specifying fonts, you can add the fontFamily property for each of the widgets and specify the fonts for them.6- To do this, we must add the appcompat-v7 library to the project. Because the appcompat-v7 library is one of the most essential to apply these settings to change the font.7- Add a directory with the desired font name to res.
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