What Is the "Get" Keyword Before a Function in a Class?
What Does Get Mean in This Es6 Class? How Do I Reference This Function? How Should I Use It? Class Polygon { Constructor(Height, Width) { This. Height =...
What does get mean in this ES6 class? How do I reference this function? How should I use it?
class Polygon {
constructor(height, width) {
this.height = height;
this.width = width;
}
get area() {
return this.calcArea()
}
calcArea() {
return this.height * this.width;
}
}
3 Answers
It means the function is a getter for a property.
To use it, just use it's name as you would any other property:
'use strict'
class Polygon {
constructor(height, width) {
this.height = height;
this.width = width;
}
get area() {
return this.calcArea()
}
calcArea() {
return this.height * this.width;
}
}
var p = new Polygon(10, 20);
alert(p.area);Must Read
Summary:
The get keyword will bind an object property to a function. When this property is looked up now the getter function is called. The return value of the getter function then determines which property is returned.
Elena Rostova holds a Master's degree in Public Health Journalism. She covers groundbreaking medical research, holistic wellness trends, mental health awareness, and nutritional science.
