The following is about my knowledge introduction

HTML (Hypertext Markup Language) is the text Markup Language, is used to describe web document a Markup Language. CSS (Cascading Style Sheet) can be translated as "Cascading Style sheets (CSS)" or "Cascading Style sheets (CSS)", which defines how to display HTML element, is used to control the appearance of the Web page. HTML + CSS is applied to implement the Tmall, su ning, the layout of the millet's website. And realize the compatible for 6 to 8. JavaScript program language, which is a kind of dynamic type and weak type, prototype-based languages, built-in support type. JavaScript three components Core (ECMAScript, document object model (DOM), the browser object model (BOM)Application javasc realized with Tmall, suning, millet animation effects, as well as some browser compatibility. AJAX is a Asynchronous JavaScript And XML (Asynchronous JavaScript And XML). XmlHttpRequest allows you to use JavaScript to the server requests and handle the response, and not block the user. Ajax is the core of the JavaScript XmlHttpRequest object. JQuery is a cross-browser JavaScript library, simplify the operation between HTML and JavaScript.