DOM (Document Object model) The Document Object model, or DOM, is the standard programming interface recommended by the Organization for the processing of extensible flag languages. On a Web page, objects that organize pages (or documents)
This book is not for beginners, as it is said in the preface. Need a certain foundation, and have a certain coding practice, in order to well understand the content of the book.学习一门编程语言，需要熟悉它的语法、形式和结构，这样才会编写合法的、符合语义的、具有意义和行为正确的程序。The purpose of this
Write the reason for this function needless to say, it must be: there is demand, but there is no available code on the Internet, no way, in order to mix the rice to eat you have to write to realize the demand! (I first write a blog, technical slag,
These URI methods encodeURI, encodeURIComponent (), decodeURI (), decodeuricomponent () Replace the Escape () and unescape () methods of the BOM. URI methods are preferable because they encode all Unicode symbols, whereas the BOM method can encode
"Each function we create has a prototype (prototype) attribute, which is a pointer to an object, and the purpose of this object is to include properties and methods that can be shared by all instances of a particular type. ”The reference type has
A popular alternative to building asynchronous APIs is to use promise (sometimes referred to as deferred or future) mode. Asynchronous APIs that have been discussed in this chapter use callback functions as
In our lives, we often refer to the Word object, such as: Have you found the object? Who's your target? Wait a minute.In our family, a young woman with a boyfriend will say I have a target, then her object is xx (her boyfriend).What about the couple?
Imagine a variant of the Downloadasync function that holds a cache (implemented as a dict) to avoid downloading the same file multiple times. Immediately invoking a callback function is an optimal choice if the file is already cached.var cache=new
Reprint Address: Http://www.jb51.net/article/21483.htm Whether it is the website application or learning JS, we pay attention to IE and Firefox browser compatibility issues, after all, these two browsers are accounted for the overwhelming majority.