how callback function works

Directory of this article: What is a callback or advanced function How the callback function is implemented Basic principles for implementing callback functions The problem and solution of the callback to Hell To implement your

What is a callback function (callback)Module A has a function foo, he passes the address of Foo to module B, and then a certain event occurs in B, by calling Foo from the address of Foo that is passed from a, informing a about what has happened and

　　function is also an object To figure out the callback function, first clearly understand the rules of the function. In JavaScript, a function is rather strange, but it is indeed an object. Rather, a function is an object created with a function ()

Callback functions are very important in JavaScript and they are almost ubiquitous. Like other more traditional programming languages, there is a callback function concept, but it is very strange that there are few online tutorials to talk about the

Original: http://javascriptissexy.com/ In Javascrip, a function is a built-in class object, meaning that it is a type of object that can be used as an object in the management of a built-in object as other objects of string, Array, number, and

The callback function is written by yourself. You need to call another function. One of the parameters of this function isIt is your callback function name. In this way, the system will call the callback function you write when necessary, so that

The callback function is written by yourself. You need to call another function. One of the parameters of this function isIt is your callback function name. In this way, the system will call the callback function you write when necessary, so that

Callback functions are very important in JavaScript and they are almost ubiquitous. Like other more traditional programming languages, there is a callback function concept, but it is very strange that there are few online tutorials to talk about the

Transferred from: http://blog.csdn.net/tywinstark/article/details/48447135#commentsMany people are asking what is a callback? Baidu came out of the basic answer is not correct, see only will make people more confused. Below try to use the simplest

One, call (), apply (), bind () method In JavaScript, a method is invoked to replace another object by calling or apply, changing the object context of a function from the initial context to the new object specified by Thisobj. The simple thing is