Javascript accessor attribute example analysis_javascript skills

This article analyzes the usage of Javascript accessor attributes with examples and shares them with you for your reference. The specific analysis is as follows:

This has a similar meaning to a constructor, but its function is different. It can associate two attributes and change one attribute by modifying the other.

Copy code The code is as follows:

var book = {
_year:2004,
edition: 1
};
Object.defineProperty(book, "year", {
Get: function() {
         return this._year;
},
set: function(newValue) {
If (newValue > 2004) {
This._year = newValue;
This.edition = newValue - 2004;
}
}
});
book.year = 2006;
console.log(book.edition);

As can be seen from the above example, when _year is modified, only year is changed in the output value, but through set, edition is also changed when year is modified.

I hope this article will be helpful to everyone’s JavaScript programming design.