面向对象编程(Object Oriented Programming),是软件开发过程的主要方法之一。在OOP中,使用对象和类组织代码来描述事物及其功能。 虽然点符号是访问对象属性的有效方法(如myobj.name),但存在一个缺陷,如果变量名(如myobj)更改,则引用原始名称的任何代码都需要更新
一般而言,在Javascript中,this指向函数执行时的当前对象。 In JavaScript, as in most object-oriented programming languages,thisis a special keyword that is used within methods to refer to the object on which a method is being invoked. ——jQuery Fundamentals (Chapter 2), by Rebecca Murphey 值得注意...
Object-oriented programmingthisreferenceProgram executionMemory managementAbstractionThe paper presents research that aims to expose students' understanding of the this reference in object-oriented programming. The study was conducted with high school students (N = 86) and college engineering students (N =...
In these two object contexts, you can see that the changed value of this lets you get the right instance, which is the basis for Object-oriented programming. That’s a topic for another day though. Let’s move on to the next context. This in a simple function Simple functions are funct...
面向对象编程(OOP,Object OrientedProgramming)现已经成为编程人员的一项基本技能。利用OOP的思想进行PHP的高级编程,对于提高PHP编程能力和规划web开发构架都是很有意义的。 PHP5经过重写后,对OOP的支持额有了很大的飞跃,成为了具备了大部分面向对象语言的特性的语言,比PHP4有了很多的面向对象的特性。这里我主要谈的是...
object, a string, a number, everything. So you really shouldent get too confused when you hear the term objects. Just know that they reffere to some data. Since every kind of data in the languages are objects, its called object oriented languages. Now how is this u...
函数作用域中的this也是有指向的(本例中指向window对象),我们知道函数的原型链是会指向Object的,所以函数本身可以被当做一个对象来看待,但遗憾的是函数的原型链上也没有this这个属性: 综上所述,this可以直观地理解为: this与函数相关,是函数在运行时解释器自动为其赋值的一个局部常量。
In the context of each class, in its methods code, there is a special reference to the current object:this.Basically, it is an implicitly defined variable. All the methods of working with object variables are applicable to it. In particular, it can be dereferenced to refer to an object fi...
This is the repository for the LinkedIn Learning course Python Object-Oriented Programming. The full course is available from LinkedIn Learning. The object-oriented programming (OOP) features in Python make it easier to build programs of increasing complexity and modularity. In this course with instru...
一般而言,在Javascript中,this指向函数 执行时的当前对象。 In JavaScript, as in most object-oriented programming languages, this is a special keyword that is used within methods to refer to the objec…