commit 21/01/2026
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77
html/assets/js/script.js
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77
html/assets/js/script.js
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/**
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* Checks if a string is valid (not null and not empty)
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* @param {string} str
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* @returns true if valid, false otherwise
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*/
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function ValidString(str) {
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if (str) {
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if (str.length > 0) {
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return true;
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}
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}
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return false;
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}
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/**
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* Performs a POST request to the specified URL with the given data.
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* @param {string} url Service endpoint URL
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* @param {object} data Data to be sent in the request body
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* @param {function} onSuccess callback for successful response
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* @param {function} onError callback for error response
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*/
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function Post(url, data, onSuccess, onError) {
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fetch(url, {
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method: "POST",
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body: JSON.stringify(data)
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}).then(response => {
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if (response.ok) {
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return response.json();
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} else {
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let str = `POST request to ${url} failed. Status: ${response.statusText}`;
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throw new Error(str);
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}
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}).then(data => {
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if (onSuccess) {
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onSuccess(data);
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}
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}).catch(error => {
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if (ValidString(error.message)) {
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if (onError) {
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onError(error.message);
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} else {
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console.error(error.message);
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}
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} else console.log("An unknown error occurred during POST request.");
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});
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}
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/**
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* Performs a GET request to the specified URL.
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* @param {string} url Service endpoint URL
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* @param {function} onSuccess callback for successful response
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* @param {function} onError callback for error response
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*/
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function Get(url, onSuccess, onError) {
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fetch(url).then(response => {
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if (response.ok) {
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return response.json();
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} else {
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let str = `GET request to ${url} failed. Status: ${response.statusText}`;
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throw new Error(str);
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}
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}).then(data => {
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if (onSuccess) {
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onSuccess(data);
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}
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}).catch(error => {
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if (ValidString(error.message)) {
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if (onError) {
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onError(error.message);
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} else {
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console.error(error.message);
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}
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}
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else console.log("An unknown error occurred during GET request.");
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});
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}
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