75 lines
1.8 KiB
TypeScript
75 lines
1.8 KiB
TypeScript
import { log } from "cc";
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export default class HordeMode {
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private static Instance: HordeMode = null;
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public static getInstance(): HordeMode {
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if (this.Instance === null || this.Instance === undefined) {
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this.Instance = new HordeMode();
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}
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return this.Instance;
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}
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isNullOrEmpty(text) {
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if (text == undefined || text == null || text == "") {
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return true;
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}
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return false;
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}
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sendGetHttpRequest(
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url: string,
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onSuccesCallBack: (response: any) => void,
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onErrorCallBack: (mes: string) => void
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) {
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//log("sendGetHttpRequest url: " + url);
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let xhr = new XMLHttpRequest();
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xhr.onreadystatechange = () => {
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if (xhr.readyState == 4) {
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// //log("sendGetHttpRequest onreadystatechange responseText: " + xhr.responseText);
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if (xhr.status >= 200 && xhr.status < 400) {
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// //log("sendGetHttpRequest onreadystatechange responseText: " + xhr.responseText);
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let response = xhr.responseText;
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onSuccesCallBack(response);
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}
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}
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}
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xhr.onerror = () => {
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let errtext = "Không thể kết nối đến máy chủ, xin hãy thử lại.";
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//log("sendGetHttpRequest onerror responseText: " + xhr.responseText);
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if (!this.isNullOrEmpty(xhr.responseText)) {
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let obj = null;
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try {
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obj = JSON.parse(xhr.responseText);
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} catch (error) { }
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if (
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obj !== null &&
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obj !== undefined &&
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!this.isNullOrEmpty(obj.msg)
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) {
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errtext = obj.msg;
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}
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}
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onErrorCallBack(errtext);
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};
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xhr.ontimeout = () => {
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onErrorCallBack("Không thể kết nối đến máy chủ, xin hãy thử lại.");
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};
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xhr.timeout = 30000;
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xhr.open("GET", url, true);
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xhr.send();
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}
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}
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