JavaScript String prototype Property
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JavaScript String prototype Property
The string prototype property allows you to add new properties and methods to existing object types.
Note: Prototype is a global property which is available with almost all JavaScript objects.
In the following example, we will create a seater (property) for all car (object).
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<script>
function car(brand, color) {
this.brand = brand;
this.color = color;
}
car.prototype.seater = 4;
var mustang = new car("Ford", "yellow");
document.write(mustang.seater);
</script>
</body>
</html>
Syntax
String.prototype.name = value
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