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-rw-r--r--fg21sim/webui/static/js/main.js56
1 files changed, 56 insertions, 0 deletions
diff --git a/fg21sim/webui/static/js/main.js b/fg21sim/webui/static/js/main.js
index 3e10fa3..25bc12d 100644
--- a/fg21sim/webui/static/js/main.js
+++ b/fg21sim/webui/static/js/main.js
@@ -9,6 +9,62 @@
/**
+ * jQuery settings
+ */
+jQuery.ajaxSetup({
+ error: function (error) {
+ console.error("AJAX request failed: code:", error.status,
+ ", reason:", error.statusText); }
+});
+
+
+/**
+ * Common functions that will be used by other scripts
+ */
+
+/**
+ * Get the value of a key stored in the cookie
+ *
+ * @param {String} name - Name of the key
+ *
+ * @return {String} - The value of the key; `undefined` if the key not exists
+ *
+ * Credit:
+ * http://www.tornadoweb.org/en/stable/guide/security.html
+ */
+var getCookie = function (name) {
+ var m = document.cookie.match("\\b" + name + "=([^;]*)\\b");
+ return m ? m[1] : undefined;
+};
+
+/**
+ * jQuery extension for easier AJAX JSON post
+ *
+ * NOTE: The XSRF token is extracted from the cookie and posted together.
+ *
+ * @param {String} url - The URL that handles the AJAX requests
+ * @param {Object} data - Data of key-value pairs to be posted
+ * @param {Function} callback - Function to be called when AJAX succeeded
+ */
+jQuery.postJSON = function (url, data, callback) {
+ return jQuery.ajax({
+ url: url,
+ type: "POST",
+ contentType: "application/json; charset=utf-8",
+ // Tornado: `check_xsrf_cookie()`
+ // Credit: https://stackoverflow.com/a/28924601/4856091
+ headers: {"X-XSRFToken": getCookie("_xsrf")},
+ data: JSON.stringify(data),
+ success: function (response) {
+ if (callback) {
+ callback(response);
+ }
+ }
+ });
+};
+
+
+/**
* Scroll the page to adjust for the fixed navigation banner
*/
var scrollTarget = function (height) {