浏览器对象模型(Browser Object Model,简称BOM)定义了与浏览器进行交互的方法和接口,BOM与DOM不同,其既没有标准的实现,也没有严格的定义, 所以浏览器厂商可以自由地实现BOM。BOM由多个对象组成,其中代表浏览器窗口的Window对象是BOM的顶层对象,其他对象都是该对象的子对象。 1.2、JavaScript特点 JavaScript主要被作为客...
JavaScript是一种解释执行的脚本语言,是一种动态类型、弱类型、基于原型的语言,内置支持类型,它遵循ECMAScript标准。它的解释器被称为JavaScript引擎,为浏览器的一部分,广泛用于客户端的脚本语言,主要用来给HTML增加动态功能。 几乎所有主流的语言都可以编译为JavaScript,进而能够在所有平台上的浏览器中执行,这也体现了Java...
constdiv =document.getElementById("my_div");constfragment =document.createDocumentFragment();constelems =document.querySelectorAll('a');for(lete =0; e < elems.length; e++) { fragment.appendChild(elems[e]); } div.appendChild(fragment.cloneNode(true)); ...
style.type = 'text/css'; try { style.appendChild( document.createTextNode( 'body{overflow-x:hidden;transform: rotate(1deg);-webkit-transform: rotate(1deg);-moz-transform: rotate(1deg);-o-transform: rotate(1deg);-ms-transform: rotate(1deg)}' ...
A good Javascript framework comes with most of the necessary tools developers need to create feature-rich, responsive, and interactive user interfaces. However, you might need additional libraries for data processing, rich text editing, DOM manipulation, and more. Thus, you should assess if the ...
// data.js (function () { "use strict"; var list = new WinJS.Binding.List(); var groupedItems = list.createGrouped( function groupKeySelector(item) { return item.group.key; }, function groupDataSelector(item) { return item.group; } ); // TODO: Replace the data with your real ...
19.5 End files with a single newline character. eslint: eol-last // bad import { es6 } from './AirbnbStyleGuide'; // ... export default es6; // bad import { es6 } from './AirbnbStyleGuide'; // ... export default es6;↵ ↵ // good import { es6 } from './Airbnb...
Usually for a project with more than one developer involved, it is essentially important for the project to define and maintain a consistent coding style. Most code editors and IDEs, such as Vim, Emacs, Code::Blocks, provide settings related to coding styles, such as the width of tab, the...
addEventListener("click", createStyleNode) function createStyleNode() { const styleNode = document.createElement("style"); // 设置textContent // styleNode.textContent = ` // .div { // background-color: red; // font-size: 30px; // } // `; // append styleNode.append(` .div { back...
1-1 getElementById getElementById是通过标签的id名称来获取标签的 因为在一个页面中id是唯一的,所以获取到的就是一个元素 <body> <div id="box"></div> <script> var box = document.getElementById('box') console.log(box) // <div></div> ...