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...
A complete JavaScript implementation is made up of the following three distinct parts: the core (ECMAScript), the document object model (DOM) and the browser object model. Web browsers are just one host environment in which an ECMAScript implementation may exist. A host environment provides the...
JavaScript can add/change/remove HTML attributes JavaScript can add/change/remove CSS styles JavaScript can react to HTML events JavaScript can add/change/remove HTML events The HTML DOM (Document Object Model) When a web page is loaded, the browser creates aDocumentObjectModel of the page. ...
The DOM, or Document Object Model, acts as an interface between a programming language such as JavaScript and an underlying document — specifically, HTML and XML documents. DOM is a W3C (World Wide Web Consortium) standard, defined as “a platform and language-neutral interface that allows ...
JavaScript is a scripting language mainly used for writing dynamic Web pages. When a script written in JavaScript is embedded in a Web page, it will be executed by the Web browser on the client machine. The history of JavaScript is nicely summarized on wikipedia.org as: JavaScript...
Meanwhile, because JavaScript is such an integral part of web functionality, all major web browsers come with built-in engines that can render JavaScript. This means JS commands can be typed directly into an HTML document, and web browsers will be able to understand them. In other words, ...
Web design today isn’t just about static pages.Dynamic content manipulationis a key player in making websites feel alive. Using JavaScript, you can directly manipulatethe Document Object Model (DOM), changing content, styles, and even structural aspects of a webpage in response to user actions...
What JavaScript can be used for The Hyper Text Transport Protocol, or HTTP, was designed to do exactly what the name implies, which is to transport HTML text across a network for viewing. But the problem with HTML is that it is completely static, providing no capabilities to implement logic...
JavaScript is a versatileprogramming languagecommonly used to create interactive effects within web browsers. As a core technology of the World Wide Web, alongside HTML and CSS, JavaScript enables dynamic content, control of multimedia, and animation on web pages. ...
},isArmed:function(){console.log('check whether the actor is Armed'); } }//1.直接传入匿名函数IronMan.attack(function(){console.log(this); });//2.传入外部定义函数IronMan.attack(findEnemy);//3.传入外部定义的对象方法IronMan.attack(attackAction.findEnemy); ...