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Loops tell the computer to run a function repeatedly. They are useful if you want to run the same code over and over again with a different input each time. To run the code a specific number of times, we use the for loop and tell the computer the numerical values in which we want the loop to run. We could also use the while loop and tell the computer the conditions in which we want the loop to run; so it won’t stop at a number but it will stop once the conditions are no longer met.

Link for image: https://blog.devgenius.io/the-anatomy-of-a-for-loop-in-javascript-9523c3da0d59

 

The purpose of the if/else code in JavaScript is to execute a block of code if a specified condition is true, and execute another one if the condition is false. IsNaN is short for “not a number”. The isNaN() code returns true if a value is not a number.

Link to image: https://javascript.plainenglish.io/6-tips-to-improve-your-conditional-statements-for-better-readability-56256c5a5245

A function in JavaScript is a set of instructions that performs a task or calculates a value. Every time you “call” the function, you are asking the computer to run it again. Passing a function means a function can be passed to another function as a new argument. This will allow the function being called to use the function argument to complete its task. The return keyword prompts the function to end and give the result of the function.

Link to image: https://www.tutorialstonight.com/js/js-function.php

A variable in JavaScript is the name of a storage location for data. For naming a variable, names can contain letters, numbers, underscores, and dollar signs. Names must begin with a letter, dollar sign, or underscore, and the names are case sensitive.  To initialize the variable, use the equal sign to set the variable name equal to a piece of data, and to declare a variable, we need to use the var, let, or const keyword, then whatever we named the variable. The prompt() code tells the browser to display a text box with a message asking the user to input some data.

Link to image: https://www.programminghunk.com/2020/02/variables-in-javascript.html

Here are the three parts of a for loop, and how to remember them: 

Initial-Action: This is where you state what a certain value equals. For example i=0, we are stating that currently, i is equal to zero. This is easy to remember because it’s the initial value, it is current. 

Loop-Continuation-Condition: This is part of a for loop that determines when the loop starts. For example, i <10. As long as i is less than ten, the loop will carry on. When i becomes greater than or equal to ten, then the loop will stop. This one is easy to remember because it’s the condition, on what condition does the loop stop, and on what condition does the value make the statement false? 

Action-After-Each -Iteration: This is the last part of a for loop. This part of a for loop tells you what to do with i after the loop is carried out one time. For example i=i+2. Each time the loop carries out, i will equal the current value plus two. This is easy to remember because it’s what happens after a loop, the ACTION that takes place once the loop is over. 

Threat modeling is a process where possible threats, such as weak passwords or the absence of appropriate safeguards, can be identified and suggestions can be made. Ransomware is the denial of a user or organization’s access to files on their computer until a ransom is paid. Hospitals are often targets because they need their data to treat patients immediately in emergent situations. 

Some methods to protect yourself online is to look your accounts up in a data breach, and then to get two-factor authentication and/or a password manager.

There are three kinds of artificial intelligence (AI.) Narrow AI, which is where we are today, is designed on task by task basis. General AI is a design where the technology will perform and “think” like a human. Super AI is where the technology goes beyond human intelligence and will be in its own control.

Links to images: https://www.toolbox.com/it-security/network-security/articles/what-is-threat-modeling-definition-process-examples-and-best-practices/

https://www.deccanherald.com/brandspot/pr-spot/what-are-the-3-types-of-ai-853275.html

When coding, if/else statements can be very useful. They allow code to be carried out based on the terms we set. Basically, we are stating that IF something is true, then the program should carry this function out, if it’s not true, so else, it carries a different statement out. We use if/else statements in order to run code based on if a statement is true or false. 

Example: 

let number = prompt (“Enter a number”);

 if  (number != 0) { 

alert (‘Not zero’);

}else{

alert (Number is zero);

{

With this function, if a person enters a number other than zero, then the program will alert “Not Zero”. We know this because we said  if  (number != 0), != means “doesn’t equal”. However, if it is zero, then the program will return “Number is zero”. 

 

With if/else statements you can have many different elements, stated by the term “else if”. You can use as many as you want in order to do what you want to. It looks like this: 

let color = prompt (“Pick a color. Pink, red, blue.”);

 if  (color = ‘Pink”) { 

alert (‘You chose pink);

}else if (color =’Red’){

alert (‘You chose red’);

}else if (color =’Blue){

alert (‘You chose blue’);

}else{

alert (“You did not choose a valid color”);

What is a variable in JavaScript? And how do you create one?

A variable in JavaScript is any item that is subject to change. In JavaScript a variable can start with a letter, symbol, or underscore, but cannot start with a number. Variables can also contain however many characters you would like. To create a variable all you have to do is use the keywords var or let and then name your variable and assign it to a value. After that, you have your specific variable that holds data.