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This article mainly introduces how to use ajax in jQuery, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

How ajax is used

Type: default value: "GET"). Request method ("POST" or "GET"), default is "GET"

Url: default value: current page address. The address from which the request was sent.

Data: data sent to the server. Will be automatically converted to the request string format. The GET request will be appended to the URL. Must be in Key/Value format

ContentType: the type of content encoding when sending information to the server.

DataType: the type of data expected to be returned by the server. If not specified, jQuery will automatically judge intelligently based on the MIME information of the HTTP package

Success: the callback function after a successful request. Parameters: data returned by the server and processed according to the dataType parameter; a string describing the status.

1. Pass the specified parameter $.ajax ({

Type: 'post'

Url:'/ operate/getNewsBynew_id'

Data: {"new_id": data.new_id}

Success: function (data) {

}

); 2. Pass the json object $.ajax ({

Type: 'post'

Url:'/ news/addnews'

ContentType: "application/json; charset=utf-8"

Data: JSON.stringify (data.field)

Success: function (data) {

Location.href= "/ gover_index_1.html"

}

}

); 3. The background accepts data processing and returns the result @ PostMapping ("/ addnews")

Public News addNews (@ RequestBody News news) {

News.setTime (new Date ())

NewsService.insertNews (news)

Return news

} @ PostMapping ("/ getNewsBynew_id")

Public NewsAll getNews (Integer new_id) {

NewsAll newsAll=newsService.getNewsBynew_id (new_id)

System.out.println (newsAll.getS_times () + "+ newsAll.getTitle ())

Return newsAll

} Thank you for reading this article carefully. I hope the article "how to use ajax in jQuery" shared by the editor will be helpful to everyone. At the same time, I also hope that you will support and follow the industry information channel. More related knowledge is waiting for you to learn!

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