js ajax

$.ajax({ url: url, dataType: "json", type: "Post", async: true, data: { }, success: function (data) { }, error: function (xhr, exception) { var msg = ""; if (xhr.status === 0) { msg = "Not connect.\n Verify Network." + xhr.responseText; } else if (xhr.status == 404) { msg = "Requested page not found. [404]" + xhr.responseText; } else if (xhr.status == 500) { msg = "Internal Server Error [500]." + xhr.responseText; } else if (exception === "parsererror") { msg = "Requested JSON parse failed."; } else if (exception === "timeout") { msg = "Time out error." + xhr.responseText; } else if (exception === "abort") { msg = "Ajax request aborted."; } else { msg = "Error:" + xhr.status + " " + xhr.responseText; } } });

$.ajax({ url: 'https://example.com/your-page', success:function(data){ //'data' is the value returned. }, error:function(){ alert('An error was encountered.'); } });

$.ajax({ url : "file.php", method : "POST", data: { //key : value action : action , key_1 : value_key_1, key_2 : value_key_2 } }) .fail(function() { return false; }) // Appel OK .done(function(data) { console.log(data); });

//Change the text of a <div> element using an AJAX //request: //using JQuery $("button").click(function(){ $.ajax({url: "demo_test.txt", success: function(result){ $("#div1").html(result); }}); }); //To send a request to a server, we use the open() //and send() methods of the XMLHttpRequest object: // Javascript xhttp.open("GET", "ajax_info.txt", true); xhttp.send(); //example below <html> <body> <h1>The XMLHttpRequest Object</h1> <button type="button" onclick="loadDoc()">Request data</button> <p id="demo"></p> <script> function loadDoc() { var xhttp = new XMLHttpRequest(); xhttp.onreadystatechange = function() { if (this.readyState == 4 && this.status == 200) { document.getElementById("demo").innerHTML = this.responseText; } }; xhttp.open("GET", "demo_get.asp", true); xhttp.send(); } </script> </body> </html>

js ajax

// For a plain JS solution, use these functions:

function _GET_REQUEST(url, response) {
  var xhttp;
  if (window.XMLHttpRequest) {
    xhttp = new XMLHttpRequest();
  } else {
    xhttp = new ActiveXObject("Microsoft.XMLHTTP");
  }

  xhttp.onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
      response(this.responseText);
    }
  };

  xhttp.open("GET", url, true);
  xhttp.send();
}

function _POST_REQUEST(url, params, response) {
  var xhttp;
  if (window.XMLHttpRequest) {
    xhttp = new XMLHttpRequest();
  } else {
    xhttp = new ActiveXObject("Microsoft.XMLHTTP");
  }

  xhttp.onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
      response(this.responseText);
    }
  };

  xhttp.open("POST", url, true);
  xhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
  xhttp.send(params);
}

// and apply like this:
_GET_REQUEST('http://someurl', (response) => {
	// do something with variable response
});
_POST_REQUEST('http://someurl', 'paramx=y', (response) => {
	// do something with variable response
});

Posted by: Guest on October-25-2020

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