function prototype definition code example

Example 1: function prototype javascript

function Person(name) {
  this.name = name;
}
Person.prototype.getName = function() {
  return this.name;
}

var person = new Person("John Doe");
person.getName() //"John Doe"

Example 2: prototype

String.prototype.countCharacter = function(char) {
    return [...this].filter(c => c === char).length;
}

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Cpp Example

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