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Differences between synchronous and asynchronousReprinted from: http://blog.csdn.net/lmhcn/archive/2006/10/08/1325941.aspxFor example: Normal B/S mode (synchronous) Ajax technology (asynchronous)Synchronization: submit a request, wait for the server to process, and return the result. The client browser cannot do anything during this period.Asynchronous: requests
In web script programming, the asynchronous mode should be used in most cases; the synchronous mode will suspend the current script engine, so when you use the synchronous mode, you should understand what you want. In C ++ development, the synchronization mode should be the mainstream. If you must use the asynchronous
The execution of the action method has two basic forms, that is, synchronous execution and asynchronous execution, and in the entire system of ASP.NETMVC involves a lot of synchronous/asynchronous execution, although in the previous corresponding article has been introduced
For more information about the differences between ajax synchronous requests and asynchronous requests, see. The differences between ajax synchronization and Asynchronization are as follows:
Code 1:
The Code is as follows:
Synchronize = function (url, param ){Function createXhrObject (){Var http;Var activeX = ["MSXML2.XMLHTTP. 3.0", "MSXML2.XMLHTTP", "Microsof
This article mainly introduces several important knowledge points of node. js: The Role of node. js, callback, synchronous and asynchronous code, event loop 1, and the role of node. js,
The meaning of I/O. Move the mouse to see the move of the mouse on the screen. Terminal input and output. And so on) The problems that node. js wants to solve (processing input, input, and high concurrency. For example, an
[IOS development-91] synchronous asynchronous serial parallel, NSOperation, and NSOperationQueue of GCD use dispatch_once to implement Singleton,-91dispatch_once
(1) Synchronous asynchronous and serial parallel implemented by GCD.
-- Synchronous sync Application Scenario: Us
To process the results of sending requests after using AJAX requests, it is best to use synchronization requests, here is a brief introduction to the next JS synchronous and asynchronous processing methods and differences, interested friends do not miss When using an asynchronous
Java synchronous and asynchronous-blocking and nonblocking understandingSynchronous and asynchronous in Java, blocking and non-blocking are all used to describe interactions, except that they describe two different levels of interaction.Synchronous vs. asynchronousSynchronous and asynchronous pay more attention to whet
Ajax knowledge notes-getting started, synchronous and asynchronous, XHR, ajaxxhr
Ajax Full name: Asynchronous Javascript and XML, Asynchronous javascript and XML.Ajax is not a language, but a technology that updates some webpages without the need to reload the entire webpage
Let's talk about the problems I've been having. One of my previous functions wanted to call the return value of the previous function, but its return value was always empty, and then I turned over some data to understand that the asynchronous request was at mischief, not to mention, look at the example, this is the code for the return value function I had before:
function Get_no_order_array () {
When using an asynchronous request, it is sometimes necessary to return the result of an asynchronous request to another JS function, in which case an asynchronous request returns the result of the request, which is where the JS function has performed the subsequent operatio
In network programming, we often encounter the concepts of blocking, non-blocking, synchronous, and asynchronous. Many people are very confused. Now let's talk to everyone about my understanding of the two concepts.
First, let's talk about blocking and non-blocking. This is mainly related to the status when the program waits for a message.
1. Blocking
The progra
There is always a certain interface between software modules, from the way of invocation, they can be divided into three categories: synchronous call, callback and asynchronous call.
Synchronous call: A blocking call in which the caller waits for the other party to execute before returning, which
synchronous asynchronous blocking non-blocking: nonsense do not say, Lao Zhang Love tea, boiled water, there are two kettle, ordinary kettle, Ring kettle (water meeting tips) (quoted) synchronization is ordinary kettle boiling water, to do nothing to come to see Open; Obstruction is the process of boiling water, you ca
undefined value is obtained.
Jquery ajax provides the async parameter. By setting the value of this parameter to false, asynchronous execution can be avoided. Therefore, someone modifies the code again:
Double-click all code
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Function checkodd (I ){Varreturnvalue;Var options = {Type: 'post ',Url: "test. ashx ",Data: {"I": I },Async: false,Success: fu
)
$ (CC) $ (LIBS)-o $ (TARGET) $ (OBJ)
Synchronization example
Synchronous means that the program sends a method call message, waiting for the method_return message. The following is a small example. If we use the send-send command, we can use:
Sending-send -- session -- print-reply -- type = method_call -- dest = org. freedesktop. Events/org. freedesktop. Rule. Introspectable. Introspect
I lear
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