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First, you need to know the general usage of jquery.deferred, and then let's get to the point: Library code: /*!  * multithreaded asynchronous queues  * rely on the jQuery 1.8+ (if you are using 1.6 or 1.7, simply replace the then method in the

First, the preface Because a very small project or a few pages but to catch up on jquery, of course, is not worth, gzip, at least, there are small dozens of K. In order to be able to operate the DOM conveniently, we need to write a lot of

In S. For, you can traverse the dominant property of an object or array, which means that our own defined attributes are traversed, and those that are already on the prototype are the ones that are available by default, such as:

Modular programming is a very common form of JavaScript programming. It generally makes the code easier to understand, but there are many good practices that are not widely known. In this article, I will review the basics of JS modular programming

Work a few days ago to write the front-end JS code, encountered a traversal element to add click events to it. This is the question that has kept me tuned for a whole afternoon. Finally, go home from work, the Internet to find out how to solve the

Referencing a type in JavaScript is a data structure that is organized together. It is also often called a class, but there is no concept of class in JavaScript. Although JavaScript is an object-oriented language, it does not have the basic

Closures have been heard in the first contact with JavaScript. The first thing to be clear is that it does not understand complexity, and it is very useful. So what are the basics before we get to know about closures? I personally think that the

In JavaScript, the callback function is specifically defined as: function A is passed to another function B as an argument (a function reference), and this function B executes function A. Let's just say function A is called a callback function. If

Organize the JS object-oriented encapsulation and inheritance. 1. Package JS is packaged in a number of ways to implement, here are listed in several commonly used. 1.1 Raw Pattern Generation objects Write our members directly into the object

JS to achieve segmentation effect, in order to familiarize themselves with JS writing, pure JavaScript scripting Briefly introduce several functions: The role of the SetCapture () function is to send the subsequent mouse events to this object,

In the definition of javascripot function closures, there is generally a outer function, a inner function. So does "closure" mean the outer function or the inner function? From the official definition, it is not clear: a closure is a combination of

My last blog title is wrong, causing some misunderstanding. I think the purpose of blogging is not to recite textbooks, but to share research and development experience. My last title was changed to "one of the topics of JavaScript closures: its

The prototype mode specifies the type that needs to be created through the instance object, which is essentially different from the factory method pattern, where the factory method pattern is defined by the inheritance of the class to create

An array to repeat is a common requirement, and we temporarily consider the same type of array to repeat. The main reason is to clear the thinking and consider performance.The For loop deletes the following duplicate var uniquefor = function (arr)

Let's look at the closure's purpose. In fact, we can do a lot of things by using closures. For example, simulate object-oriented code style, more elegant, more concise expression of code, in some ways to improve the efficiency of code execution. 1

Deep understanding of JS closures Closures (closure) are a difficult and unique feature of the JavaScript language, and many advanced applications rely on closure implementations. Scope of a variable To understand closures, you must first understand

Closure is a relatively abstract concept, especially for the JS Novice. The explanation in the book is rather obscure, and it is the same for me. But he is also JS ability to improve the one link can not be bypassed, almost every interview must ask

What is a "super Big integer"? JavaScript uses the floating-point algorithm in the IEEE754 standard to represent number numbers. I didn't take the time to learn more about the IEEE754 standard, but for dealing with oversized integers, it was

Introduction Control sub page in parent page Control parent page in sub-page First, a primer Let's take a look at an example, there are two pages, 1.html embedded 2.html through the IFRAME, two pages are the same domain 1.html

Overview You can use a timer to speed up the process of running your code. You can give each timer a name, and you can run up to 10,000 timers on each page. When you invoke the Console.timeend () function by using the timer name, the browser returns