SEBESTA WWW Source Code Listings

Chapter 4

1. Compute the real roots of a given quadratic equation. If the roots are imaginary, this script displays NaN, because that is what results from taking the square root of a negative number, roots.html
2. An example of a switch statement for table border size selection, borders2.html
3. Illustrates the use of the Date object by displaying the parts of a current date and using two Date objects to time a calculation, date.html
4. The script in this document has an array of names, name_list, whose values are in alphabetic order. New names are input through prompt. Each new name is inserted into the name array, after which the new list is displayed, insert_names.html
5. An example illustrate an array of arrays, nested_arrays.html
6. The params function and a test driver for it. This example illustrates function parameters, parameters.html
7. A function and a function tester Illustrates array operations, medians.html
8. A function tst_phone_num is defined and tested. This function checks the validity of phone number input from a form, forms_check.html
9. An example to illustrate debugging help, debugdemo.html