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The jQuery ajax() method provides core functionality of AJAX in jQuery. It sends asynchronous HTTP requests to the server.

The standard way of making an AJAX call using jQuery is rather simple – by using the $.ajax() function:

<script>
$.ajax(
  '/jquery/getdata',
  {
      success: function(data) {
        alert('AJAX call was successful!');
        alert('Data from the server' + data);
      },
      error: function() {
        alert('There was some error performing the AJAX call!');
      }
   }
);
</script>

As you already known, the $ sign is used to refer to a jQuery object.

In the above example, the first parameter is  string URL to which you want to submit or retrieve the data.

The second parameter is the JSON format. By default, ajax() method performs http GET request if option parameter does not include method option.

In most cases, we will need to specify the success and error callbacks. The success callback will be called after the successful completion of the Ajax call. On the other hand, the failure callback will be called if something goes wrong and there was an issue performing the AJAX call.

Using Promises for AJAX with jQuery         

$.ajax method supports JavaScript Promises as well. 

.done() as replacement for .success()

.fail() as replacement for .error()

.always() as replacement for .complete()

$.ajax({
       data: someData,
       dataType: 'json',
       url: '/path/to/script'
}).done(function(data) {
      // If successful
      console.log(data);
}).fail(function(jqXHR, textStatus, errorThrown) {
      // If fail
      console.log(textStatus + ': ' + errorThrown);
});

Chaining Works

Assign the $.ajax() method to a variable, for which we can chain promise callbacks to. In this example, the $.ajax() method returns a promise object natively, which we can use chaining too:

var ajaxCall = $.ajax({
   context: $(element),
   data: someData,
   dataType: 'json',
   url: '/path/to/script'
});

ajaxCall.done(function(data) {
    console.log(data);
});

Multiple AJAX calls

We can compound several AJAX calls with their status $.when().

var a1 = $.ajax({...}),
a2 = $.ajax({...});

$.when(a1, a2).done(function(r1, r2) {
  console.log(r1[0]);
  console.log(r2[0]);
});

Dependence chain of AJAX requests

We can also chain multiple AJAX request. For example, when the second AJAX call relies on returned data on the first call. 

var a1 = $.ajax({
             url: '/path/to/file',
             dataType: 'json'
         }),

    a2 = a1.then(function(data) {
    // .then() returns a new promise
           return $.ajax({
              url: '/path/to/another/file',
              dataType: 'json',
              data: data.sessionID
             });
         });

a2.done(function(data) {
    console.log(data);
});

By Ami

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Unityでは「(アプリ名)/Assets/Resources」以下の階層に保存した設定ファイルをScriptから直接読み込むことが可能です。

今回は「(アプリ名)/Assets/Resources/json/jsonsample.json」に保存したjsonの設定ファイルを読み込む処理のサンプルをシェアしたいと思います。

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Microsoft said it agreed to buy Nuance Communications, a cloud and artificial intelligence (AI) software company, in a cash transaction valued at $ 19.7 billion, including debt on Monday.

So what is Nuance ?

“Nuance provides the artificial intelligence layer at the point of healthcare delivery and is a pioneer in the real-world application of enterprise artificial intelligence” Microsoft CEO Satya Nadella said in a statement. “Artificial intelligence is the highest priority in technology and healthcare is most urgent application.”

Nuance products include multiple clinical speech recognition as a service (SaaS) software offerings built on Microsoft Azure. The company’s solutions work with major healthcare systems and are currently used in 77% of US hospitals, noted in a statement of him.

Beyond healthcare, Nuance provides expertise in artificial intelligence and customer engagement solutions in interactive voice response, virtual assistants, and digital and biometric solutions.

Microsoft’s acquisition of Nuance builds on the existing partnership between the companies announced in 2019 to help transform healthcare delivery. Last year, the software giant introduced Microsoft Cloud for Healthcare to address the needs of the rapidly transforming and growing healthcare industry.

This combination might results solutions and expertise to deliver new cloud and artificial intelligence capabilities in healthcare and other industries, and represent the latest step in Microsoft’s industry-specific cloud strategy, the Redmond-based company noted.

Yuuma

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This time I would like to share you how to automatically download CSV file using PHP.

To download CSV file, the header() function and the php://output parameter must be used.

header('Content-type: application/csv');
header('Content-Disposition: attachment; filename=myCSV.csv');
header("Content-Transfer-Encoding: UTF-8");

Setting the header is importance when downloading files automatically. In the first line of code, the content-type option is that HTTP header telling the browser that the MIME type of the content is application/csv.

Other particularly important option is in the second line of code, the filename option. This is where we want to name the file that will be generated and downloaded.

The other importance line of code is content transfer encoding ,this encoding method will transform binary email message data into the US-ASCII plain text format.

For populating CSV, fopen() giving us access to PHP’s output buffer. This line of code is that the file pointer connected to the output stream.

$f = fopen('php://output', 'a'); 

Writing data to the Csv and we can define column headings like this:

fputcsv($f, array('Column 1', 'Column 2', 'Column 3'));

We can fetch data and loop over the rows of data and output them.

mysql_connect('localhost', 'username', 'password');
mysql_select_db('database');
$rows = mysql_query('SELECT field1,field2,field3 FROM table');

while ($row = mysql_fetch_assoc($rows)) fputcsv($f, $row);

By Ami

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FaceBookは近日リリース予定のv28アップデートにて、同社のVRヘッドセットOculusQuest2に新機能「OCULUS AIR LINK」が搭載されることを発表しました。

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