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IT Review    JAVASCRIPT (Can someone please help me answer the below questions. It would be nice...

IT Review    JAVASCRIPT

(Can someone please help me answer the below questions. It would be nice if you add comments explaining what you are doing? If unable to add comments the answer would be fantastic. Thank you.

  1. Given the following function definition:

function percent(x)

{

     return x / 100;

}

Which of the following statements correctly calls the percent function:

  1. percent(10);
  2. percent: 10;
  3. percent();
  4. percent = 10;

Indicate whether each of the following evaluates to true or false, given x = 3, y = 2, z = 1.

  1. z != y && y == (y + z) % (x + y)   
  2. y * z >= x + y * z || x + y * z < z * (x + y)           
  3. !(y > z) && z >= z / y - x                                             
  4. x <= y && y <= z % x && z / y > x                         
  5. true == ‘true’                                                            
  6. 5 === 5.0
  1. Write a code segment that uses a for loop to add up the odd numbers between 5 and 15, inclusive, and then write the total sum to the element <div id=”total”> in the web page.
  2. Imagine you have this button: <button id=’myBtn’>Click Me</button>
    Write a line of JavaScript that gets the button and assigns it to a variable. Do not use jQuery.
  3. Write a code segment that prints random numbers between 10 and 20 until a 20 is found.
  4. Define a function called formatName that takes two parameters, firstName and lastName, and returns a string containing the capitalized first letter of firstName followed by a period, a space, then lastName, where the first letter is capitalized and the rest is lower case.

For example, formatName(“elmer”, “fuDD”) should return “E. Fudd”

Your function may assume that firstName and lastName are string values containing at least one character.

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Homework Answers

Answer #1

Dear Student ,

As per the requirement submitted above , kindly find the below solution.

Question :

Answer : a.percent(10);

Here a new web page with name "simpleJS.html" is created, which contains following code.

simpleJS.html :

<script>

//function defination

function percent(x)

{

return x / 100;

}

//function call

var result=percent(10);

//displaying value of result

document.write(result);

</script>

======================================================

Output : Open web page simpleJS.html in the browser and will get the screen as shown below

Screen 1 :simpleJS.html

*************************************

Question :

Answer :

Consider following code :

<script>

var x = 3;

var y = 2;

var z = 1;

document.write("z != y && y == (y + z) % (x + y) : "+(z != y && y == (y + z) % (x + y))+"<br>");

document.write("y * z >= x + y * z || x + y * z < z * (x + y) :" +(y * z >= x + y * z || x + y * z < z * (x + y))+"<br/>");

document.write("!(y > z) && z >= z / y - x : "+(!(y > z) && z >= z / y - x)+"<br/>");

document.write("x <= y && y <= z % x && z / y > x) : "+(x <= y && y <= z % x && z / y > x)+"<br/>");

document.write("true == 'true' : "+(true == 'true')+"<br/>");

document.write("5 === 5.0 : "+(5===5.0));

</script>

=====================

Open web page in the browser and will get the screen as shown below

******************************

Question :

Answer :

Here a new simple web page with name "simpleJS.html" is created which contains following code.

simpleJS.html :

html lang="en">

<head>

<!--title for web page -->

<title>Javascript Basics</title>

<meta charset="UTF-8">

<meta name="viewport" content="width=device-width, initial-scale=1">

</head>

<body>

<!--div that display total -->

<div id="total">

<!--script is used for javascript -->

<script>

//declaring variable

var sum=0;

//using for loop that goes from 5 to 15

for(var i=5;i<=15;i++)

{

//checking if value of i is odd or even

if(i%2!=0)

{

//if odd add number to sum

sum=sum+i;

}

//getting div element

document.getElementById("total").innerHTML="Total is : "+sum;

}

</script>

</body>

</html>

======================================
Output :Open web page simpleJS.html in the browser and will get the screen as shown below

Screen 1 :simpleJS.html

************************************

Question :

Answer :

Here a new web page with name "demoJS.html" is created which contains following code.

demoJS.html :

<!DOCTYPE html>

<html lang="en">

<head>

<!--title for web page -->

<title>Javascript Basics</title>

<meta charset="UTF-8">

<meta name="viewport" content="width=device-width, initial-scale=1">

</head>

<body>

<!--button -->

<button id="myBtn">Click Me</button>

<br><br>

<!--span to disply button value -->

<span id="mySpan"></span>

<!--script is used for javascript -->

<script>

//getting div element

var btn=document.getElementById("myBtn").innerHTML;

//displaying on span

document.getElementById("mySpan").innerHTML=btn;

</script>

</body>

</html>

=========================

Output :Open web page demoJS.html in the browser and will get the screen as shown below

Screen 1 :demoJS.html

************************

NOTE : PLEASE FEEL FREE TO PROVIDE FEEDBACK ABOUT THE SOLUTION.

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