Intro to internet applications com-340-dl01 programming exercise 5

Programming exercise 5


10.8 Write JavaScript statements to accomplish each of the following tasks:

a) Display the value of the seventh element of array f.

b) Initialize each of the five elements of one-dimensional array g to 8.

c) Total the elements of array c, which contains 100 numeric elements.

d) Copy 11-element array a into the first portion of array b, which contains 34 elements.

e) Determine and print the smallest and largest values contained in 99-element floating point

array w.


10.10 Use a one-dimensional array to solve the following problem: A company pays its salespeople on a commission basis. The salespeople receive $200 per week plus 9 percent of their gross sales for that week. For example, a salesperson who grosses $5000 in sales in a week receives $200 plus 9 percent of $5000, or a total of $650. Write a script (using an array of counters) that obtains the gross sales for each employee through an HTML5 form and determines how many of the salespeople earned salaries in each of the following ranges (assume that each salesperson’s salary is truncated to an integer amount):

a) $200–299

b) $300–399

c) $400–499

d) $500–599

e) $600–699

f) $700–799

g) $800–899

h) $900–999

i) $1000 and over


11.13 Write a script that inputs several lines of text and a search character and uses String method

indexOf to determine the number of occurrences of the character in the text.


11.14 Write a script based on the program in Exercise 11.13 that inputs several lines of text and

uses String method indexOf to determine the total number of occurrences of each letter of the

alphabet in the text. Uppercase and lowercase letters should be counted together. Store the totals for

each letter in an array, and print the values in tabular format in an HTML5 textarea after the totals

have been determined.

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