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  JavaScript exercises and solutions - Swap two numbers
Posted by: Qomplainerz - 04-04-2023, 07:54 AM - Forum: JavaScript Tutorials - No Replies

The HTML part between the <body></body> tags looks like this:

Code:
Enter the first number here:
<br>
<input type="Text" id="Num1">
<br>
Enter the second number here:
<br>
<input type="Text" id="Num2">
<br>
<input type="button" id="submit" value="submit" onclick="SwapNumbers()"></input>
<p id="Output"></p>
<input type="button" id="reset" value="Reset" onclick="Reset()"></input>

The JavaScript part looks like this:

Code:
function SwapNumbers()
{
  Num1 = document.getElementById("Num1").value;
  Num2 = document.getElementById("Num2").value;
  Num3 = Num1;
  Num4 = Num2;
  Output = "You have entered " + Num4 + " and " + Num3;
  document.getElementById("Output").innerHTML = Output;
}

function Reset()
{
  document.getElementById("Num1").value = "";
  document.getElementById("Num2").value = "";
  document.getElementById("Output").innerHTML = "";
}

Note: The reset button and the reset function are optional in case you want to delete what you were looking for in order to look for something else.

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  JavaScript exercises and solutions - Iterating through an array with keys and values
Posted by: Qomplainerz - 04-04-2023, 07:52 AM - Forum: JavaScript Tutorials - No Replies

Code:
const Games =
      [
        "Assetto Corsa",
        "Assetto Corsa Competizione",
        "rFactor",
        "rFactor2",
        "Kart Racing Pro",
        "KartKraft",
        "vRally",
        "WRC 10",
        "F1 2023",
        "F1 2022",
        "F1 2021",
        "F1 2020",
        "F1 2019",
        "F1 2018",
        "F1 2017",
        "F1 2016",
        "F1 2015",
        "F1 2014",
        "F1 2013",
        "F1 2012",
      ];

for(i = 0; i < Games.length; i++)
  {
    document.write(i + " ");
    document.write(Games[i] + "<br>");
  }
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  JavaScript - For Loop Example
Posted by: Qomplainerz - 04-04-2023, 07:51 AM - Forum: JavaScript Tutorials - No Replies

Code:
for(let step = 0; step < 15; step++)
  {
    document.write("Making one step at a time. <br>");
  }
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  JavaScript - Do...While Loop Example
Posted by: Qomplainerz - 04-04-2023, 07:51 AM - Forum: JavaScript Tutorials - No Replies

Code:
let i = 0;

do
  {
    i += 1;
    document.write(i + "<br>");
  } while (i < 15);
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  JavaScript - While Loop Example
Posted by: Qomplainerz - 04-04-2023, 07:49 AM - Forum: JavaScript Tutorials - No Replies

Code:
let n = 0;
let x = 0;

while(n < 30)
  {
    n++;
    x += n;
    document.write("The value of n is " + n + "<br>");
    document.write("The value of x is " + x + "<br>");
  }
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  JavaScript - Continue Statement Example
Posted by: Qomplainerz - 04-04-2023, 07:49 AM - Forum: JavaScript Tutorials - No Replies

Code:
let i = 0;
let n = 0;

while(i < 15)
  {
    i++;
    if(i === 3)
      {
        continue;
      }
    n += i;
    document.write("The value of i is " + i + ".<br>");
    document.write("The value of n is " + n + ".<br>");
  }
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  JavaScript - For...Of Statement Example
Posted by: Qomplainerz - 04-04-2023, 07:48 AM - Forum: JavaScript Tutorials - No Replies

Code:
const arr = [3, 5, 7];
arr.foo = "hello";

for(const i in arr)
  {
    document.write(i + "<br>");
  }

for(const i of arr)
  {
    document.write(i + "<br>");
  }
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  JavaScript - Switch Break Statements
Posted by: Qomplainerz - 04-04-2023, 07:47 AM - Forum: JavaScript Tutorials - No Replies

The HTML part between the <body></body> tags looks like this:

Code:
What's your favorite fruit?
<br>
<input type="text" id="fruit"></input>
<br>
<input type="button" id="submit" onclick="submit()" value="submit"></button>
<br>
<p id="output"></p>

The JavaScript part looks like this:

Code:
function submit()
{
  fruitType = document.getElementById("fruit").value;
 
  switch(fruitType)
    {
      case "Oranges":
        document.getElementById("output").innerHTML = "Oranges are $0.59 a pound.";
        break;
      case "Apples":
        document.getElementById("output").innerHTML = "Apples are $0.32 a pound.";
        break;
      case "Bananas":
        document.getElementById("output").innerHTML = "Bananas are $0.48 a pound.";
        break;
      case "Cherries":
        document.getElementById("output").innerHTML = "Cherries are $3.00 a pound.";
        break;
      case "Mangoes":
        document.getElementById("output").innerHTML = "Mangoes are $0.56 a pound.";
        break;
      case "Papayas":
        document.getElementById("output").innerHTML = "Papayas are $2.79 a pound.";
        break;
      default:
        document.getElementById("output").innerHTML = `Sorry, we ran out of ${fruitType}. <br> Would you like to get anything else?`;
    }
}
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  Binary to Decimal in JavaScript
Posted by: Qomplainerz - 04-04-2023, 07:46 AM - Forum: JavaScript Tutorials - No Replies

Code:
Num001 = 0B00000000;
Num002 = 0B00000001;
Num003 = 0B00000010;
Num004 = 0B00000011;

document.write(Num001);
document.write("<br>");
document.write(Num002);
document.write("<br>");
document.write(Num003);
document.write("<br>");
document.write(Num004);
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  JavaScript - Get the length of an array
Posted by: Qomplainerz - 04-04-2023, 07:45 AM - Forum: JavaScript Tutorials - No Replies

Code:
const countries = [];

countries[0] = "Norway";
countries[1] = "Sweden";
countries[2] = "Finland";
countries[3] = "England";
countries[4] = "Scotland";
countries[5] = "Ireland";

document.write(countries.length);
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