For the most part, in JavaScript, what you see is what you get. A value’s a value; there are no tricks. Sometimes however, you want a value that’s based on some other values: someone’s full name, for example, is a concatenation of their first and last names. If you have a person object, and you want the users of that object to be able to set the full, first or last name, and see that change immediately reflected in the other values, you’d conventionally build it with functions:...
But this is ugly, and requires the users of your object to care that the properties are related; in a more complex example, that might not be as obvious as with names. Luckily, there’s a better way, added in ECMAScript 5.
Meet getters and setters.
Your new post is loading...
