Multiple Properties
Description
Object.defineProperties() method allows you to define multiple properties at once.
Example
var book = {};
// w ww. j a v a2 s.c o m
Object.defineProperties(book, {
_year: {
value: 2004
},
edition: {
value: 1
},
year: {
get: function(){
return this._year;
},
set: function(newValue){
if (newValue > 2004) {
this._year = newValue;
this.edition += newValue - 2004;
}
}
}
});
book.year = 2005;
console.log(book.year);
console.log(book.edition);
book.year = 2000;
console.log(book.year);
console.log(book.edition);
The code above generates the following result.
