README: add release shield

* add arrow to active colum header
 * update docu

README.md

@@ -1,3 +1,7 @@
+[![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](https://opensource.org/licenses/MIT)
+[![Release](https://img.shields.io/badge/Release-v1.3.0-brightgreen)](https://gitea.com/6543/gitea_sortt/releases)
+
+
 # gitea_sortt
 
 Java Script for https://github.com/go-gitea/gitea/pull/7980 (Sortable Tables) .. by header click

sortt.js

@@ -4,26 +4,26 @@
   @License MIT
   @Author 6543
   @Repository https://gitea.com/6543/gitea_sortt
-  @Version 1.0
+  @Version 1.3.0
 
 */
 
-//creat global function with main routine
-window.sortt=function(normsort,revsort,isdefault){
-  //sortTable [normsort] (revsort) (isdefault)
+//Declare Functions
 
-  //normsort is needet
-  if (typeof normsort  === 'undefined') return false;
+//create global function with main routine
+window.sortt=function(normsort,revsort,isdefault){
+  //sortt [normsort] (revsort) (isdefault)
+
+  //normsort is needed
+  if (!(normsort)) return false;
 
   //default values of optinal parameters
-  if (typeof revsort  === 'undefined') revsort = "";
-  if (typeof isdefault  === 'undefined') isdefault = false;
-  if (!(typeof isdefault  === 'boolean')) isdefault = false;
+  if (!(revsort)) revsort = "";
 
   // parse URL
   /*  script check if url has already a sort=
-        NO: if sort=“” indikates default (with * prefix) set url_sort=
-        YES: set url_sort variable
+        NO: if normsort is default set url_sort=
+					YES: set url_sort variable
   */
   let url = new URL(window.location);
   let url_sort = url.searchParams.get("sort");
@@ -34,15 +34,79 @@ window.sortt=function(normsort,revsort,isdefault){
         NO: generate URL with sort param
         YES: check if reverse attribute exist -> YES: generate URL with reverse sort param
   */
-
   if (url_sort != normsort) {
-    url.searchParams.delete("sort");
-    url.searchParams.append("sort",normsort);
+    url.searchParams.set("sort",normsort);
   } else if (revsort != "") {
-    url.searchParams.delete("sort");
-    url.searchParams.append("sort",revsort);
+    url.searchParams.set("sort",revsort);
   }
 
   //open url
   window.location.replace(url.href);
 };
+
+//create global function with main routine
+function getArrow(normsort,revsort,isdefault){
+	//sortt [normsort] (revsort) (isdefault)
+
+	//arrows
+	var arrow_down = '⯆';  // U+2BC6
+	var arrow_up = '⯅';		 // U+2BC5
+
+  //normsort is needed
+  if (!(normsort)) return false;
+
+  //default values of optinal parameters
+  if (!(revsort)) revsort = "";
+
+	//get sort param from url
+  let url_sort = (new URL(window.location)).searchParams.get("sort");
+
+  if ((url_sort === null) && isdefault) {
+		//if sort is sorted as default add arrow tho this table header
+		if (isdefault) return arrow_down;
+	} else {
+		//if sort arg is in url test if it corelates with colum header sort arguments
+		if (url_sort === normsort) {
+			//the table is sorted with this header normal
+			return arrow_down;
+		} else if (url_sort === revsort) {
+			//the table is sorted with this header reverse
+			return arrow_up;
+		} else {
+			//the table is NOT sorted with this header
+			return false;
+		}
+	}
+}
+
+
+//USE Functions
+
+// test if jQuery is available
+if(!window.jQuery) {
+	console.log("sortt.js: ERROR no jQuery found!");
+} else {
+
+  //use JQuery to go throu each table header with "data-sortt" attribute
+  $('th').each(function() {
+		//if data attribute sortt is set
+    if ($(this)[0].dataset.sortt) {
+			//get data
+			var data = $(this)[0].dataset.sortt;
+			data = data.split(",");
+
+			//add onclick event
+			$(this).on('click', function() {
+		  	sortt(data[0],data[1],data[2]);
+    	});
+
+			//add arrow to colume
+			var arrow = getArrow(data[0],data[1],data[2]);
+			// if function got a match ...
+			if (arrow != false ) {
+				$(this).prepend(arrow + " ");
+			}
+		}
+  });
+
+}