ajax get js

1$.ajax({
2    	url: "www.site.com/page",
3    	success: function(data){ 
4    	    $('#data').text(data);
5    	},
6    	error: function(){
7    		alert("There was an error.");
8    	}
9    });

1
2let xhr = new XMLHttpRequest();
3
4xhr.open("GET", "une/url");
5
6xhr.responseType = "json";
7
8xhr.send();
9
10xhr.onload = function(){
11    if (xhr.status != 200){ 
12        alert("Erreur " + xhr.status + " : " + xhr.statusText);
13    }else{ 
14        alert(xhr.response.length + " octets  téléchargés\n" + JSON.stringify(xhr.response));
15    }
16};
17
18xhr.onerror = function(){
19    alert("La requête a échoué");
20};
21
22xhr.onprogress = function(event){
23    if (event.lengthComputable){
24        alert(event.loaded + " octets reçus sur un total de " + event.total);
25    }
26};

1const xhttp = new XMLHttpRequest();
2xhttp.onload = function() {
3    document.getElementById("demo").innerHTML = this.responseText;
4}
5xhttp.open("GET", URL);
6xhttp.send();