Hardcoding versus Variables
// The following is JavaScript code.
//
// Why using variables is better than
// hardcoding.
//
// Which is easier, smarter?
// Which is harder to maintain,
// to change?
// Example of hardcoding
// If you want to change "Joe Smith" to a
// to a different name.
// You will have to change "Joe Smith" nine times.
document.writeln("Joe Smith was hardcoded.");
document.writeln("</br>");
document.writeln("Joe Smith is sad.");
document.writeln("</br>");
document.writeln("Joe Smith is bad.");
document.writeln("</br>");
document.writeln("Joe Smith is mad.");
document.writeln("</br>");
document.writeln("Joe Smith is big.");
document.writeln("</br>");
document.writeln("Joe Smith is smelly.");
document.writeln("</br>");
document.writeln("Joe Smith is silly.");
document.writeln("</br>");
document.writeln("Joe Smith is hungry.");
document.writeln("</br>");
document.writeln("Joe Smith is funny.");
document.writeln("</br>");
document.writeln("</br>");
document.writeln("</br>");
document.writeln("</br>");
document.writeln("</br>");
// Or?
// If instead you used a variable.
// You only have to change the
// variable userName ONCE!
var userName = "Joe Smith";
document.writeln(userName + " is the string in the variable userName.");
document.writeln("</br>");
document.writeln(userName + " is sad.");
document.writeln("</br>");
document.writeln(userName + " is bad.");
document.writeln("</br>");
document.writeln(userName + " is mad.");
document.writeln("</br>");
document.writeln(userName + " is big.");
document.writeln("</br>");
document.writeln(userName + " is smelly.");
document.writeln("</br>");
document.writeln(userName + " is silly.");
document.writeln("</br>");
document.writeln(userName + " is hungry.");
document.writeln("</br>");
document.writeln(userName + " is funny.");
document.writeln("</br>");
document.writeln("</br>");
document.writeln("</br>");
document.writeln("</br>");
document.writeln("</br>");
// The variable userName is now a
// different name.
// The variable userName was "Joe Smith".
// Now it's "Lee Young".
// You only have to change one variable
// ONCE. Instead of nine or more times
// Hardcoding vs. variables.
// More work vs. less work.
// userName was "Joe Smith".
userName = "Lee Young";
// Now userName is "Lee Young".
document.writeln(userName + " is the string in the variable userName.");
document.writeln("</br>");
document.writeln(userName + " is sad.");
document.writeln("</br>");
document.writeln(userName + " is bad.");
document.writeln("</br>");
document.writeln(userName + " is mad.");
document.writeln("</br>");
document.writeln(userName + " is big.");
document.writeln("</br>");
document.writeln(userName + " is smelly.");
document.writeln("</br>");
document.writeln(userName + " is silly.");
document.writeln("</br>");
document.writeln(userName + " is hungry.");
document.writeln("</br>");
document.writeln(userName + " is funny.");
document.writeln("</br>");
