JavaScript prototype属性
The prototype property allows you to add properties and methods to an object.prototype属性可为对象添加属性和方法
Syntax
语法
object.prototype.name=value
Example 1
举例 1
In this example we will show how to use the prototype property to add a property to an object:
在这个举例中我们将展示如何使用 prototype属性来为对象添加属性
<script type="text/javascript"> function employee(name,jobtitle,born) { this.name=namethis.jobtitle=jobtitle this.born=born} var fred=new employee("Fred Flintstone","Caveman",1970) employee.prototype.salary=null fred.salary=20000 document.write(fred.salary)</script>
The output of the code above will be:
输出结果为：
20000
页:
[1]