import { jsonList } from "../cache.js";
import { fetchData } from "./fetchdata.js";
/**
* parse/preload a JSON files
* @param {loader.Asset} data - asset data
* @param {Function} [onload] - function to be called when the asset is loaded
* @param {Function} [onerror] - function to be called in case of error
* @returns {number} the amount of corresponding resource parsed/preloaded
* @ignore
*/
export function preloadJSON(data, onload, onerror) {
if (typeof jsonList[data.name] !== "undefined") {
// already loaded
return 0;
}
fetchData(data.src, "json")
.then(response => {
jsonList[data.name] = response;
if (typeof onload === "function") {
// callback
onload();
}
})
.catch(error => {
if (typeof onerror === "function") {
onerror(error);
}
});
return 1;
}
Powered by webdoc!