$.ajax({
type: "GET",
dataType: "json",
url: "https://reqres.in/api/unknown/2",
success: function(data){
console.log(data)
}
});
i tried insesrt:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
but cesium not works like ordinary platfroms
Cesium's "Sandcastle" test environment does not include a means to include JQuery. Instead, you can use Cesium's own helper functions for things like this, such as Cesium.Resource.fetchJson.
For example: Live Sandcastle Demo
var viewer = new Cesium.Viewer("cesiumContainer");
Cesium.Resource.fetchJson({
url: "https://reqres.in/api/unknown/2"
}).then(data => {
console.log(JSON.stringify(data, null, ' '));
});