Ajax, is the asynchronous request, specifically want to update a part of the page, no need to reload the entire page, as long as the sending request to update the local page.Ajax, not new language, just a technologyThe use of Ajax relies on
Error: function (XMLHttpRequest, textstatus, errorthrown ){Alert (XMLHttpRequest. status );Alert (XMLHttpRequest. readystate );Alert (textstatus );},
Additional reading:
Send a request to the server through the XMLHTTPRequest
we often need to consider the issue that login names cannot be repeated on the user registration page. However, there are many ways to solve this problem. You can use the from form submission and redirection methods to achieve this, we can even use
Projects sometimes use some Ajax effects. Because it is relatively simple, there is no such thing as ajax.net, And the handwritten code is implemented. The next day, someone reported an error to me, saying that only the value read for the first time
I asked about Ajax yesterday. I replied, isn't it an asynchronous communication method provided by the jquery framework. I was dumb when I asked about the principle. In fact, I only used Ajax technology during my internship. It is very convenient.
The same source principle of the browser makes XMLHttpRequest unable to communicate across domains. There are many abnormal practices to achieve cross-origin. Among them, the jsonp solution is more elegant, but jsonp is limited to the get method,
Differences between AJAX and post modes: ajaxgetpost Mode
This article analyzes the differences between AJAX and post modes. Share it with you for your reference. The specific analysis is as follows:
If the request is in get mode, the transmitted
Solve the problem of data cookie loss in ajax cross-origin requests. ajaxcookie
Front end:
Take jquery as an example:
Need to join
Copy codeThe Code is as follows:XhrFields :{WithCredentials: true},CrossDomain: true,$. Ajax ({Type: postType,Url: url,
Examples of native AJAX writing and ajax instance analysis
This article analyzes the native AJAX writing method. Share it with you for your reference. The specific analysis is as follows:
Although many JS frameworks now provide AJAX call methods,
Jquery's method of accessing servlet and returning data to the page, jqueryservlet
This example describes how jquery accesses servlet and returns data to the page. Share it with you for your reference. The specific implementation method is as
No basic learning AJAX: creating automatic verification forms, basic ajax Verification Forms
Traditional web pages check whether user names are occupied during registration. traditional verification is obviously slow and clumsy.
When ajax appears,
Details about the interaction between browsers and servers in Ajax, and details about ajax
Before learning about Ajax, let's take a look at how browsers interact with servers.
1. the browser sends a request to the server
2. The server receives
The most simple and perfect solution for ajax to obtain data with Chinese garbled characters
You can use scriptCharset to solve the problem. You cannot use contentType.
Copy codeThe Code is as follows:$. Ajax ({Url: testUrl,DataType: 'jsonp ',Type:
Ajax cache in IE8 and 9, and ajax cache in ie89
Recently, in the login registration box for a website, jquery is used at the front end. Because the sign and login are not on a separate page, they are displayed in a pop-up box. Therefore, we decided
The difference between ajax and post processing json in jQuery is that jqueryjson
Recently, when I was making a portal user comment, I had not used jquery for a long time. I didn't expect to steal the post method to process json data of ajax
JQuery Mobile displays the ajax loader manually and prompts loading..., jqueryajax
When developing with jQuery Mobile, sometimes we need to display a loading prompt box during the ajax request (for example, a rotating image + a prompt: loading ...).
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