Question

In: Computer Science

For both JavaScript and HTML: ---------------------------------------------------- Write and test JavaScript scripts for the two exercises that...

For both JavaScript and HTML:

----------------------------------------------------

Write and test JavaScript scripts for the two exercises that follow, debug (if necessary).  When required to write a function, you must include a script to test the function with at least two different data sets.  In all cases, for testing, you must write an HTML file that references the JavaScript file.

  1. Output an HTML table of the numbers from 2 to 8 along with their squares and cubes.
  2. Create a function titled counter that takes an array of numbers as the parameter. The function is then to return an array holding the numbers of negative elements, zeros, and values greater than zero in the given array parameter.

Solutions

Expert Solution

// Code for question1

<!DOCTYPE html>
<html>

<body>


<!-- creating table with solid border -->
   <table style="border: solid;">

       <!-- creating row with three headers -->
       <tr>
          <th>Number</th>
          <th>Square</th>
          <th>Cube</th>
       </tr>

       <!-- creating rows with their three datas: number, square and cubes -->

       <tr>
          <td>2</td>
          <td>4</td>
          <td>8</td>
       </tr>

       <tr>
          <td>3</td>
          <td>9</td>
          <td>27</td>
       </tr>


       <tr>
          <td>4</td>
          <td>16</td>
          <td>64</td>
       </tr>

       <tr>
          <td>5</td>
          <td>25</td>
          <td>125</td>
       </tr>

       <tr>
          <td>6</td>
          <td>36</td>
          <td>216</td>
       </tr>

       <tr>
          <td>7</td>
          <td>49</td>
          <td>343</td>
       </tr>

       <tr>
          <td>8</td>
          <td>64</td>
          <td>512</td>
       </tr>


   </table>

</body>
</html>

// Screenshot for question1

// output for question1:

// QUESTION2 SOLUTION:

// counter.js file for question2 which has the implementation of counter function

// Creating a function counter which takes an array arr of number as a parameter

function counter(arr){

   // intializing counter variable of negative number, positive number and zero to 0
   var negativeCount = 0;
   var positiveCount = 0;
   var zeroCount = 0;

   var i;
   // start counting
   for(i=0; i < arr.length; i++){

       // if number is zero increment zeroCount
       if(arr[i] == 0)
           zeroCount++;

       // if number is negative increment negative count
       else if(arr[i] < 0)
           negativeCount++;

       // else increment positive count
       else
           positiveCount++;


      
   }

   // now create an array having all three count as elements
   //var tempArr = new Array(positiveCount, zeroCount, negativeCount);
   var tempArr = [];
   tempArr[0] = negativeCount;
   tempArr[1] = zeroCount;
   tempArr[2] = positiveCount;

   // now return the tempArr
   return tempArr;
}

// Screenshot for counter.js file

// Html code to test the counter function

<!DOCTYPE html>
<html>
<head>
   <!-- Import the counter.js file -->
   <script src="counter.js"></script>
</head>
<body>

   <h1>Test1 output: </h1>
   <p id="test1"></p>

   <h1>Test2 output: </h1>
   <p id="test2"></p>

   <!-- Writing script to check the counter function of couter.js file -->
   <script >
      

       // test 1
       var tempArr = counter([1, 2, 0, 0, 5, -1, -3, -4, 0, 4, 0, 0]);

       document.getElementById("test1").innerHTML = "Negative count is: " + tempArr[0] + "<br>" + "Zero count is: " + tempArr[1] + "<br>" + "Positive count is: " + tempArr[2];

       // test 2
       var tempArr = counter([13, 23, 9, 0, 5, -1, -3, -4, 0, 4, 0, 0, -99, 0, 76]);

       document.getElementById("test2").innerHTML = "Negative count is: " + tempArr[0] + "<br>" + "Zero count is: " + tempArr[1] + "<br>" + "Positive count is: " + tempArr[2];

   </script>

  

</body>
</html>

// screenshot for HTML test file of counter function

// OUTPUT for question2 after running html test file

venereology answered 1 month ago
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