Problem 2: Requirement # Requirements var myQuote=\"He who laughs, lasts.\"; Giv

Question

Problem 2:

Requirement # Requirements

var myQuote="He who laughs, lasts.";

Give the value of each of the following expressions:

a. myQuote.toUpperCase()

b. myQuote.indexOf("a")

c. myQuote.indexOf("@", 1)

d. myQuote.indexOf("who")

e. myQuote.indexOf("a", 10)

f. myQuote.lastIndexOf("a")

g. myQuote.lastIndexOf("a", 7)

h. myQuote.lastIndexOf("a", 10)

i. myQuote.charAt(7)

j. myQuote.charAt(myQuote.length)

k. myQuote.charAt(myQuote.length - 3)

Problem 3:

Requirement # Requirements

Explain the below code. Include the final output to console.log().

Tip: Higher Order Function (Callback).

function Thing(name) {

this.name = name;

}

Thing.prototype.doSomething = function(callback, salutation) {

callback.call(this, salutation);

}

function Afunction(salutation) {

console.log(salutation + " " + this.name);

}

var t = new Thing('John Smith');

t.doSomething(Afunction, 'Hello');

Problem 4:

Requirement # Requirements

What are the advantages of using Objects in JavaScript. Min 50 words

Submit Answer

Problem 5:

Requirement # Requirements

Create a an Object constructor function called MedRecord with the properties firstName, lastName, medRecord, medID, insuranceInfo.

Define a MedRecord prototype method called changeInsurance() that accepts the name of a patient new insurance information and update object insuranceInfo property.

Problem 6:

Requirement # Requirements

Put the below data in a JSON formatted array where each individual is its own object. Then write code that will print each person's first letter of their first name and last name (example: msmith)

firstName: Mike lastName: Smith

firstName: Anna lastName: House

firstName: Mark lastName: McDonald

Explanation / Answer

Problem 2:

var myQuote="He who laughs, lasts.";

Give the value of each of the following expressions:

a. myQuote.toUpperCase()//Convert the string to upper case letters

HE WHO LAUGHS, LASTS.

b. myQuote.indexOf("a")//Returns the position of the first occurrence of a specified value in a string.

ans: 8

c. myQuote.indexOf("@", 1)//@ is not found in the myQuote

ans:-1

d. myQuote.indexOf("who")

ans:3

e. myQuote.indexOf("a", 10)//From 10th position onwards search of "a" begins. In 16th position we found "a"
ans: 16.

f. myQuote.lastIndexOf("a")//Search a string for the last occurrence of "a"
ans: 16
g. myQuote.lastIndexOf("a", 7)//not found "a" in the string of first 7 characters.
ans:-1
h. myQuote.lastIndexOf("a", 10)// found in "laughs"
ans:8
i. myQuote.charAt(7)// returns the character at the specified index in a string.
ans: l

j. myQuote.charAt(myQuote.length)// myQuote.length returns the length of the string i.e 21. charAt(21) returns nothing.  
ans: nothing returns.

k. myQuote.charAt(myQuote.length - 3)
//here length is 21-3 i.e 19 charAt(19)
ans:t

Dear According to Chegg one can answer only one question.

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