Asynchronously loads the given URL as JSON. Returns a promise that will resolve toa JSON object once loaded, or reject if the URL failed to load. The data is loadedusing XMLHttpRequest, which means that in order to make requests to another origin,the server must have Cross-Origin Resource Sharing (CORS) headers enabled. This functionadds 'Accept: application/json,*/*;q=0.01' to the request headers, if notalready specified.
Name | Type | Description |
---|---|---|
url |
String | The URL to request. |
headers |
Object | optional HTTP headers to send with the request.'Accept: application/json,*/*;q=0.01' is added to the request headers automaticallyif not specified. |
request |
Request | optional The request object. Intended for internal use only. |
Returns:
a promise that will resolve to the requested data when loaded. Returns undefined if
request.throttle
is true and the request does not have high enough priority.
Example:
Cesium.loadJson('http://someUrl.com/someJson.txt').then(function(jsonData) {
// Do something with the JSON object
}).otherwise(function(error) {
// an error occurred
});