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How to define getter and setter functions in JavaScript?
Getter
When a property is accessed, the value gets through calling a function implicitly. The get keyword is used in JavaScript. An identifier, either a number or a string is allowed for set.
Setter
When a property is set, it implicitly call a function and the value is passed as an argument. With that the return value is set to the property itself. The set keyword is used in JavaScript. An identifier, either a number or a string is allowed for set.
Example
Here’s an example showing how to implement both getter and setter
<html>
<body>
<script>
var department = {
deptName: "Marketing",
deptZone: "North",
deptID: 101,
get details() {
return "Department Details<br>" + "Name: " + this.deptName + " <br>Zone: " + this.deptZone + "<br>ID: " + this.deptID;
},
set details(info) {
var words = info.toString().split(' ');
this.deptName = words[0] || '';
this.deptZone = words[1] || '';
this.deptID = words[2] || '';
}
}
department.details = 'Marketing North 001';
document.write(department.deptName);
document.write(department.deptZone);
document.write(department.deptID);
</script>
</body>
</html>
Updated on: 2020-06-16T08:11:42+05:30
316 Views
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