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Hello and welcome.

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In this video I'm going to introduce you to what executing a program means in programming to execute

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or executing a program basically means getting the program to take some kind of action.

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So often you hear developers or programmers using the word execute or executing or they're basically

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mean is that they get in the computer or the program to do so.

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Another word you may hear is run.

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So executing and running a program is basically the same thing to execute the program you tell in the

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computer to run or get the program to take some kind of action.

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The programs can be executed in various types of environments and also in different ways.

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For example if you have a bunch of code in the developer console you can execute a statement or several

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statements inside the developer console so dependent on the environment you want to execute your code.

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There are different ways you can do that.

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I have called three complete javascript statements displayed inside the developer console to get.

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For example if I wanted to get value for the third statement which is a variable add numbers if I wanted

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to get the computer to compute that value and displayed there are a couple of ways I can go ahead to

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execute or run the statement in order to get the desired output.

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I want output basically is what the computer gives back to you.

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All right.

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So for this statement if I want to get an output I want the computer or the program to compute the value

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here first number plus second number.

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And I want it to display it in a pop up window.

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Now a pop up box is something you may have come across before.

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It's usually used to display different types of messages and to do that.

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We use an alert function.

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An alert is a built in function in javascript.

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A function is basically a bunch of code that does something specific.

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The purpose of an alert function is to display messages in a pop up box.

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So in order to execute the statement on line 3 which is this ad number I'm going to use a alert function

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which is a pop up box.

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So I type in alert.

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He has to be in lowercase.

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And then in parentheses I need to add what I want to pop up.

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OK.

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So I want this variable called add numbers.

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That's the code I'm trying to execute.

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All right.

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And I put a semicolon.

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So what that would do it will add the first number which is 27 plus the second number which is forty

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seven.

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So it will add these two variables together and display the results in a pop up box.

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Alert is a built in function in javascript that pops up messages.

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So the message I wanted to pop up is this one here is this variable and this variable equals to this

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variable plus that variable so five PRESENTER As you get a pop up box you can see here is displayed

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the output here which is seven to force we've seen four had this plus this.

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It will give me that.

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So this is known as an alert pop up box.

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So the output now executed this statement in an alert box I just click OK and the message will go away.

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Now I can also execute the same statement in a different way.

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I want 5 1 the result to display inside this console.

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I will use another function which is called the console log.

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So I just typing basically what the consular log means it will display the output inside the console.

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So let me to the same pin do a console and in parentheses add what I want the console to display which

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is the variable called add numbers.

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So B console dot lock.

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OK so you type P console log and inside parentheses you have to had the semicolon and then you press

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enter.

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You can see here the console dot log which is a function I have passed in.

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I've given it the information I want to be displayed and the information I want is this variable here

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called add numbers so you can see here is displayed it the output inside the console output.

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Basically is the result that the program gives back.

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So it's been displayed in the console.

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So these are some basic examples of executing programs.

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So when you hear the term executing or to execute is the same thing as running a program or to run a

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program it means you get in the computer all the program to take some plan of action to display some

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output.

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So that's it for this video.

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Thanks for watching.

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Bye for now.