AJAX: A Beginner’s Guide by Steven Holzner

By Steven Holzner

Книга AJAX: A Beginner’s consultant AJAX: A Beginner’s advisor Книги AJAX Автор: Steven Holzner Год издания: 2008 Формат: pdf Издат.:McGraw-Hill Страниц: 475 Размер: eleven ISBN: 0-07-159531-7 Язык: Английский sixty eight (голосов: 1) Оценка:Essential abilities — made easy!Learn how you can use AJAX (Asynchronous JavaScript and XML) to create net functions that reflect the richness of computing device functions. utilizing easy-to-follow examples, "AJAX: A Beginner's consultant" will get you set to work with this state of the art choice of applied sciences very quickly. Create XMLHttpRequest gadgets and use JavaScript, XML, DHTML, CSS, Hypertext Preprocessor, and extra to construct next-generation internet purposes. you are going to additionally know about various loose, pre-written AJAX frameworks you should use correct away.Designed for simple Learning:Key talents & ideas — Lists of particular abilities lined within the chapter.Ask the specialist — "Questions & solutions" sections full of bonus info and precious tips.Try This — Hands-on routines that exhibit tips to observe your skills.Annotated Syntax — instance code with remark that describes the programming options being illustrated.Table of contents:Chapter 1. crucial AJAX bankruptcy 2. gaining knowledge of JavaScript bankruptcy three. growing AJAX purposes bankruptcy four. complete Throttle AJAX bankruptcy five. utilizing AJAX Frameworks bankruptcy 6. dealing with XML in AJAX bankruptcy 7. operating with Cascading kind Sheets with AJAX bankruptcy eight. dealing with Dynamic HTML with AJAX bankruptcy nine. Introducing Hypertext Preprocessor with AJAX bankruptcy 10. personal home page extensive bankruptcy eleven. Validating person enter with AJAX and personal home page bankruptcy 12. utilizing the HTML DOM and AJAX Index

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Message because the “Using JavaScript functions” header will have been overwritten. The way to display new text in a web page after that page has been loaded is to write to an existing HTML element, like a

element. For example, you might add a

element and give it the ID targetDiv: Using JavaScript functions

Using JavaScript functions

31 32 Ajax: A Beginner’s Guide

So how can you address the targetDiv element in the JavaScript code in the display function?

Else” test. , Evaluates two expressions and returns the result of evaluating the second expression. delete Deletes an object and removes it from memory, or deletes an object’s property, or deletes an element in an array. function Creates an anonymous function. in Evaluates to true if the property you’re testing is supported by a specific object. instanceof Evaluates to true if the given object is an instance of the specified type. new Creates a new object from the specified object type. typeof Evaluates to the name of the type of the operand.

The display function will indeed be called after the body of the page loads—when the user clicks the button—and that’s fine. But there’s a catch. write method, because the document is considered closed. ” message because the “Using JavaScript functions” header will have been overwritten. The way to display new text in a web page after that page has been loaded is to write to an existing HTML element, like a

element. For example, you might add a

element and give it the ID targetDiv: Using JavaScript functions