Vanilla JavaScript is a lightweight implementation of pure JavaScript language without added libraries. Here, the term “vanilla” refers to uncustomized JavaScript. Many major companies use Vanilla JS, includin
console.log('已声明的函数被当做回调函数调用,this指向:',this); } var attackAction = { findEnemy:function(){ console.log('attackAction.findEnemy本当做回调函数调用时,this指向',this); }, isArmed:function(){ console.log('check whether the actor is Armed'); } } //1.直接传入匿名函数 IronM...
What is JavaScript ? 陈丶陈奎宁 来自专栏 · web前端学习记录 2 人赞同了该文章 一、前言 首先我们先要了解下什么是编程语言,编程语言俗称“计算机语言”。编程语言可以理解为计算机和人类都能识别的语言。其次编程语言是能够让程序员准确的定义计算机所需要使用的数据,并精确地定义在不同情况下所应当采取的行动...
代码语言:javascript 代码运行次数:0 运行 AI代码解释 //假设我们定义一个人的类functionPerson(name){}// 方法-介绍你自己(使用this编写)Person.prototype.introduceYourselfWithThis=function(){if(Object.hasOwnProperty.call(this,'name')){return`My name is${this.name}`;}return`I have no name`;}// ...
Clicking Javascript Void Link You can run the Void (0) function in a console to check what it returns Running Void(0) in the Console 1.2 Call A Function Using A Void Operator You can also call any javascript function with the help of the Void operator. To do so, follow the steps: ...
HTML is the foundation of the house. It provides the basic layout, structure, and content of a website. CSS is the interior design. It provides design, fonts, colors, effects, and other visual elements. JavaScript is the electrical and plumbing systems. JS brings dynamism and interactivity to...
How can an undeclared variable have a type? And what is type of undeclared variable in JavaScript? Learn all about it in this blog post.
A callback function in JavaScript is a function that is passed as an argument to another function and is invoked after some kind of event.
//方式一.使用thisinvoker.whoInvokeMe=function(){console.log(this.name); }//方式二.不使用thisfunctionwhoInvokeMe2(invoker){console.log(invoker.name); } 方式二的方式并不是语法错误,可以让开发者避开了因为对this关键字的误用而引发的混乱,同样也避开了this所带来的对代码的抽象能力和简洁性,同时会造成...
So!!is not an operator, it's just the!operator twice. Real World Example "Test IE version": let isIE8 = false; isIE8 = !! navigator.userAgent.match(/MSIE 8.0/); console.log(isIE8); // returns true or false 1. 2. 3.