add date in editor

static/script.js

@@ -1,3 +1,23 @@
+function insertAtEnd(myField, myValue) {
+    myField.value += myValue;
+}
+function insertDate() {
+    insertAtEnd(document.getElementById("edit_md"),"\n[ ] "+getDate()+" ");
+}
+
+function getDate(){
+    var d = new Date();
+    var hr = d.getHours();
+    var min = d.getMinutes();
+    if (min < 10) { min = "0" + min; }
+    var day = d.getDate();
+    var month = 1+d.getMonth();
+    if (month < 10) { month = "0" + month; }
+    var year = d.getFullYear();
+    return year+"-"+month+"-"+day+" "+hr+":"+min
+}
+
+
 function growTextarea(name) {
     var el=document.getElementById(name);
     var rows=el.value.split(/\r?\n|\r/);