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Mrrafil [7]
3 years ago
6

Java-Script Concept quiz:

Computers and Technology
1 answer:
In-s [12.5K]3 years ago
5 0

Answer:

Explanation:

1) the versions of JavaScript that are fully supported by all modern browsers ( Except internet explorer 9) are:

C. ECMAScript 3, ECMAScript 5

2) JavaScript is used to implement complex features on a_____

A. web page

3) computer programming tools that are used to store data are called____

C. variables

4) var name = Scott; is the code to create a ____ called "Scott"

D. None of the above

Scott is a variable

5) the key difference between "var" and "let" variables is that____

D. None of the above  

let is used to redefine a variable by using var to redefine may cause problems

6) Hoisting in JavaScript is the process whereby declarations get moved to the____

C. top

7) Im JavaScript, "/ /" is used to code____

A. comments

8) ______ data types have two potential values - true and false.

D. None of the above

Boolean is the data type and null is always false

9) Using ____ gives coders the ability to query data set data to create blueprints.

C. consoles

The Console object provides access to the browser's debugging console.

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Suppose you have a class called Child with an instance data value called weight and height. Then it has a method called doubleWe
alexira [117]

Answer:

Explanation:

The following code is written in Java. I recreated the entire Child class as described with the instance variables and the doubleWeight method. Then created the getter and setter methods for both the weight and height variables.

class Child {

   double weight, height;

   public double doubleWeight() {

       double superWeight = weight * height;

       return superWeight;

   }

   public double getWeight() {

       return weight;

   }

   public void setWeight(double weight) {

       this.weight = weight;

   }

   public double getHeight() {

       return height;

   }

   public void setHeight(double height) {

       this.height = height;

   }

}

7 0
2 years ago
What does the following code alert?
goldenfox [79]

It is just a declaration of an object variable, <em>person</em>, in JavaScript. Within a <em>person</em> object, there are key:value pairs. The code that you  shared has the following keys: name, age, and favouriteFood, whereas the values of those keys are: Mike, 25, and pizza.


There is <em>no</em> alert statement in this code snippet; therefore, it <em>will not alert </em>anything. This code contains only a variable called <em>person, </em>and that's it!

5 0
3 years ago
Read 2 more answers
Discuss any five positive and five Negative impact<br>of ICT on society​
mojhsa [17]

Answer:

The technology of information communication has the capacity to transform society. It plays a key part and provides the infrastructure needed to achieve each of the United Nations Sustainable Development Goals. It also allows financial integration by m-commerce and lets people connect instantly to millions.

ICT has a particularly important impact on business. It allows people to exchange knowledge and advice immediately and establish a website or online shop at a low cost, thus reducing the obstacles to starting a business dramatically. As such, it is a major factor in change and the maturity of ICTs is strongly connected to economic growth.

Explanation:

Effects of ICT

As a human beings, we are always associated in our everyday life with many essential things. The use of ICT equipment in our lifestyle has simplified many time-consuming calculations and difficult tasks, and social contacts have been strengthened. ICT has affected life by enhancing the timely distribution of media information and improved home and workplace communications via social networking, e-mail, etc.

The quality of human life has been greatly improved by ICT. For example, it could take a few days for a letter to come to the recipient, but a single minute for an e-mail to reach. ICT offers a broader understanding and information for each facility  24 Hrs X 7 days. In the following, ICT affects different fields of daily living.

Positive Impacts of ICT:

  • As domestic and home businesses.
  • As social connectivity.
  • As E-learning/ As education
  • As for shopping/trading
  • As for banks
  • As a job/jobs

Negative Impacts of ICT:

  • Face-to-face interaction reduced.
  • Social Decoupling.
  • Physical activity/health issues reduced.
  • Cost.

4 0
2 years ago
Which of the following careers is part of the Printing Technology pathway?
torisob [31]
Textile designer i think

6 0
3 years ago
Decribe the advantages of using emails compared with physical faxing ?
fredd [130]

Answer:

email is SO much faster

Explanation:

6 0
2 years ago
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