【免费】javascript脚本技术课件_javascript脚本下载资源-CSDN文库

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JavaScript脚本技术是Web开发中的基础且至关重要的部分，它主要负责网页的动态效果和交互功能。对于初学者来说，理解和掌握JavaScript的核心概念是至关重要的。以下是对"javascript脚本技术课件"的详细解析： 1. **JavaScript简介**：JavaScript是一种解释型、基于对象的脚本语言，最初由Netscape公司的Brendan Eich设计，主要用于网页和网络应用。它是HTML和CSS之外的第三大前端核心技术，能够让静态的网页变得生动有趣。 2. **语法基础**：JavaScript的语法与C++和Java相似，但更为灵活。基础包括变量声明（var、let、const）、数据类型（字符串、数字、布尔值、null、undefined、对象、数组等）、运算符（算术、比较、逻辑、赋值等）以及控制流程（条件语句、循环语句、函数定义等）。 3. **DOM操作**：Document Object Model（DOM）是HTML和XML文档的结构化表示。JavaScript通过DOM API可以读取、修改、添加或删除页面元素，实现动态更新网页内容。 4. **事件处理**：JavaScript通过监听和响应用户或浏览器触发的事件（如点击、滚动、提交表单等），实现与用户的交互。事件处理通常通过事件监听器（addEventListener）和事件处理函数来完成。 5. **AJAX**：Asynchronous JavaScript and XML，用于在不刷新整个页面的情况下与服务器交换数据并更新部分网页内容。XMLHttpRequest对象是实现AJAX的核心，现在更常使用fetch API进行异步请求。 6. **闭包和作用域**：理解JavaScript的词法作用域和闭包是深入学习的关键。闭包允许函数访问和修改外部作用域的变量，即使在其外部函数已经执行完毕后。 7. **原型和继承**：JavaScript使用原型链机制实现对象的继承，原型对象（prototype）可以扩展对象的功能。ES6引入了类（class）和继承的新语法，但底层仍然是基于原型实现的。 8. **函数式编程**：JavaScript支持函数式编程概念，如高阶函数、箭头函数、map、reduce和filter等，这些特性可以让代码更加简洁、可读性更强。 9. **ES6及后续版本新特性**：ECMAScript是JavaScript的标准，ES6（也称为ES2015）引入了许多新特性，如解构赋值、模板字符串、let和const、类、Promise等。后续的ES7至ES11也引入了很多增强，如async/await、Object.assign、Set和Map等。 10. **Node.js**：JavaScript并不局限于浏览器环境，Node.js让JavaScript可以用于服务器端开发。Node.js基于Chrome的V8引擎，提供了一个强大的运行时环境，支持非阻塞I/O和事件驱动，适合构建高性能的网络应用。通过深入学习这些知识点，初学者可以逐步掌握JavaScript脚本技术，为成为Web开发者打下坚实的基础。"javascript脚本技术课件"将涵盖这些内容，帮助学习者系统地了解和实践JavaScript编程。

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javascript脚本技术课件（167个子文件）

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<html> <head> <script language="JavaScript"></script> </head> <body>  <pre> The editor for all your editing needs. UltraEdit is an excellent replacement for NOTEPAD and a lot more, with support for unlimited file sizes, 100,000 word spelling checker, full HEX editing capabilities, configurable syntax highlighting for programmers, column editing. UltraEdit has all the features you will need. UltraEdit handles multiple files at once, even if they are multi-megabyte files. It is Disk based and only requires a small amount of memory, even for very large files. UltraEdit-32 is designed for Windows 95/98/Me,NT/2000 and XP, and UltraEdit is designed for for Windows 3.1. One fee allows use of both products. Standard Features: - Disk based text editing - No limit on file size, minimum RAM used even for multi-megabyte files - Multiple files open and displayed at the same time - Column mode editing!!!, Insert columns/ delete/ cut/ add sequential numbers - Drag and Drop Editing - File sort (with remove duplicates, ignore case, ascending, descending) - 100,000 word spell checker - Syntax highlighting - configurable, pre configured for C/C++, VB, HTML and Java - Automatic word wrap at specified column with hard return - Insert file into an existing document at cursor position - Drag and Drop support from the file manager - Configurable toolbar - Splitter windows - Insert and overstrike modes for editing - Multi-level undo and redo - UltraEdit is Windows 3.x CUA compliant - Find and Replace - Also allows selection of text between caret and find target when shift key is pressed, Replace all in select area - Find in Files, Replace In Files - Goto Line Number/Page Break - Font Selection for display and printer. (Supports all fonts installed including TRUE-TYPE fonts) - Print support with headers, footers, margins and page breaks. - Automatic Line Indentation - Tab Settings - Word Wrap Support - Hexadecimal Editor - Allows editing of any binary file - HEX Cut, copy and paste support - HEX Insert and Delete of characters - HEX Find, Replace and Replace All - Bookmarks - Multiple Windows of the same file - Comprehensive macro support, including saving and loading - Context Sensitive Help - Automatic backup file generated with (.BAK) extension in the directory of the original file - UltraEdit retains its screen position each time it is used - Line & column number display (line number display may be disabled) - Pop-up menus with right mouse button. - Text conversion to lower or upper case and capitalization. - Unix/Mac to DOS Conversion - DOS to Unix conversion - Auto detect UNIX/Mac files - Convert Word Wrap to CR/LF's allowing word wrap to be written to file with hard returns - Convert CR/LF's to Word Wrap (removes CR/LF's from file) - Template Support - More ... Also: - UltraEdit accepts a command line input and so can be used to replace NOTEPAD or other editors that are called up from a file manager by clicking on a file. -------- Registration ------------------------------------ You are limited to 45 Days of use for an unregistered version. UltraEdit is a shareware program. If you find it useful and continue to use it you are obligated to register it with the author by sending $35.00 Add $4 for CD, or free delivery if email/download. (Ohio Residents add $1.93 Sales Tax) to: IDM Computer Solutions, Inc. Attn: Ian D. Mead 5575 Lesourdsville-West Chester Rd. Liberty Twp., OH 45011 USA Free upgrades for at least 1 year by download from www site. Upgrade fee is $17.50 (Ohio residents add $0.97 Sales Tax)for previous registered users. -------- VISA/MASTERCARD/American Express Accepted --------- For VISA/MasterCard/American Express orders, include: 1) Name of card holder 2) Address of card holder 3) Name and address of user if different from card holder 4) Card #. 5) Expiration date of card Credit card orders may be faxed to (513) 779 8643, telephoned to (513) 779 8549 or sent to my E-Mail address (see below). -------- CompuServe Registration ------------------------- UltraEdit may also be registered online on CompuServe by typing GO SWREG and following instructions for registering using ID 2662 or UltraEdit and ID 4017 for UltraEdit-32. This will entitle you to an authorization code, the latest registered version, and technical support. For CompuServe registrations, a newer version is not sent out if the latest version is available on CompuServe. -------- E-Mail Address ---------------------------------- Internet: idm@idmcomp.com (backup idm@iglou.com) CompuServe: 71613,2654 WWW http://www.idmcomp.com or http://www.ultraedit.com -------- Return Policy ---------------------------------- No refunds are issued after an authorization code has been issued. Exchanges are allowed if appropriate. This program may be freely distributed provided it is unmodified, no charge is made for the software and it is distributed in the original ZIP or self installing EXE form. -------- Latest Version ---------------------------------- The latest version of UltraEdit/UltraEdit-32 may be found in several places: The following www page: http://www.idmcomp.com and http://www.ultraedit.com In the WINUSER Forum on CompuServe, an official distribution and support online resource for future updates. Search for ULTRAEDIT.ZIP, and UEDIT32.ZIP. The Windows Users Group Network (WUGNET), operators of the oldest and largest independent support resource forum (WINUSER) for Windows Users on CIS with nearly 1,000,000 active members is recognized in the press, user groups, developers, and Microsoft as the foremost resource for shareware publishers on CompuServe and the Internet. On the Internet on several sites, including CICA and other sites. -------- History ----------------------------------------- // History - Purged changes prior to v5.00 v9.00c - Bug Fixes - New file created on load not automatically being closed when file is opened - Fix problem with UNICODE and syntax highlighting comments - HEX mode not accepting ASCII character input - Fixed problem with some UTF-8 or UNICODE files being corrupted with extra '00'. v9.00b - Bug Fixes - Issues relating to display of page break - On XP, non printable characters are not displayed by system routines and are ignored. Changed UltraEdit to display '?' instead - Fixed crash with macros invoked from the command line that also exit - Corrected Find in Files positioning with some UNIX files - Fixed several problems with UNICODE files - Fixed problem with Print Preview and tabs with two pages on one page - Fixed scrolling problem with hidden lines - Fixed problem with replace in selection when selection made from right to left - Corrected problem with relative paths in projects - Fixed crash at startup with nVidia drivers and nView - Other minor issues - Added INI setting "Display DOS Lines Only" that causes only lines terminated with CR/LF to display as separate lines - Added INI setting "ClearType" for XP users that use ClearType fonts to provide better display of these with Syntax Highlighting - Added View Template List to key mapping v9.00a - Bug Fixes - Issues relating to display of page break - Unicode search of ASIAN characters sometimes failed - Addressed several issues with menu hot keys - Running tools