Today we enter the subject of programming, because although this topic is really broadIt is always good to know a little about the details of others. The script is a base concept in the language of computers. In this way we will not be so lost currently on the subject.
In this case we will talk about scripts, from what they are to what they do and what is their role in this world of computing? In fact, are present in most of the actions we carry out in our teams.
These scripts basically form part of anatomy of our systems and programs. If you are a programmer, or do you have any computer knowledge, you know what I'm talking about, but if you are a beginner like most, invited you to continue reading so that you can get into context with the next topic.
Script concept
To explain everything in more detail, let's start with the meaning of his name that in Spanish means ‘text’, that makes a lot more sense than you think. These 'scripts’ o ‘script’ from a simpler point of view, they are a sequence of lines of code that you must follow to perform an action.
In other words, these scripts have instructions written in code through which a large number of functions can be executed within a program. Therefore, you can say that the script is in charge of giving orders to certain parts of a program sequentially.
Now for web programming, a script is a code or fragment of this that is inserted into an HTML document. Therefore, can be executed and interpreted by the web browser and said codes can be seen in the browser.
What are the functions of a script?
In a nutshell, scripts can carry the control of different events within a programWell, as mentioned at the beginning of the article. These are the scripts that must be followed in a program to run correctly.
A clear example is the following: the moment you visit a web page an action is performed, it can be downloading a file or entering a news blog. Toward click 'download’ or on the blog, is running or 'running’ a specific script that performs this action without causing problems.
The same thing happens the same way in any action that takes place from our computers, how to move the window or just delete the browser history.
Knowing all this, Can you imagine the amount of scripts required to run one of your favorite games?? It is almost impossible to imagine a figure, but really there are many necessary.
A clear example in games is what we can see in Roblox, where is necessary use the Lua programming language. These games must be scripted, for each action that is performed, so this is a large amount.
What should I do to create a script?
Creating a script is very easy to do even in a notes app as long as the syntax is respected. Namely, that written instructions can be read and executed for the machine. A) Yes, to create a script you just have to follow the following steps:
- Open the text program of your choice.
- Write the statements you want to be executed in a valid and consistent programming language.
- When I finish, will click on 'Save as…’ and you will save it in the compiler format where you are going to execute it.
There are different programming languages where the use of scripts is basic, so there are several execution formats. Some examples are.py for Python and .bat for Windows.
How to insert and run a script on a website?
Web page developers use servers where they are contain all the necessary data to be able to execute any script. That is why to perform this action it is important to have access to the body of the web page code.
To insert a script in a web enough copy and paste it in the source so it can run. This will depend on the action performed with the script instructions.
In addition, also Simple scripts can be created and run in a browser., like chrome. This allows the execution of scripts written in .php thanks to the fact that it is based on the JavaScript programming language..
How to check that a script works?
exists different programs or compilers in which you can test the script and check that its syntax is correct. Thus, the instructions are verified to be executable, enabling its insertion in a web page.
We can find a variety of compilers for different programming languages. For example, NetBeans is the compiler o 'development environment’ where can run scripts written in Java.
In the same way, Python can run scripts in windows console only if they are well written. Verifying a script is the arduous task that programmers struggle every day to be able to run the code without problems.
Process to remove from an unwanted script
Yes, as in all good things, there are bad. These scripts are a favorite tool for ‘hackers, since in this way they can make automated orders. This goes directly to our entire browser, affecting him in one way or another.
Most of these are usually embedded in .html or .php files. And they can hide data so it is much more difficult for the antivirus to detect it. Its main function is to steal information, alter the operation of a program and cause execution to fail completely.
To be able to remove an unwanted script you have to find the source code where it is hosted, so you can disable its operation. There are programs that help in this process, although you can also read all the instructions until you find the unwanted part. However, it is better to have a good antivirus that finds the unwanted script.
What are the most widely used programming languages for scripts?
Now on Windows these scripts are known as batch files, These can be found in the code of programs that have extensions .bash or .as. Besides Java, there are other languages to create a script, como ActionScript, take, Python, Ruby y VPScript. Which are also widely used today.
Scripts run directly in the browser, what's more not directly on the server where the page being visited is located, so you cannot manage a database from it.
Another important piece of information is Java was the first language used to create a script., that is why the following word is well known “JavaScript“Why not? Sure you've seen it before.
