ES6 String对象属性Prototype
ES6 String对象属性Prototype
该属性允许您向String对象添加属性和方法.
注:prototype是一个全局属性,几乎所有对象都可用.
语法
string.prototype
例子
function employee(id, name) { this.id = id; this.name = name; } var emp = new employee(123, "Smith"); employee.prototype.email = "smith@abc.com"; console.log("Employee 's Id: " + emp.id); console.log("Employee's name: " + emp.name); console.log("Employee's Email ID: " + emp.email);
输出
Employee’s Id: 123 Employee’s name: Smith Employee’s Email ID: smith@abc.com