History: API Tracker Update Demo

            {syntax type="markdown"  editor="wysiwyg"} {PARAM(name="itemId")} 
 {PERM(perms="tiki_p_modify_tracker_items" type="trackeritem" object={{itemId}})} 
 {LIST(cache="n")} 
 {pagination max="1"} 
 {filter field="tracker_id" content="18"} 
 {filter field="object_id" content="{{itemId}}"} 
 {OUTPUT()}Item admin: {DIV(class="click-modal" type="span")}[tiki-tracker-update_item?trackerId=18&itemId={display name=object_id}|{display name=title}]{DIV} (example number: {button href="#" _icon_name="arrow-down" _class="stockAdmin minus" _type="danger"} 
{DIV(type="span" class="stockAdmin number")}{display name="tracker_field_exampleNumber" default="0"}{DIV}
 {button href="#" _icon_name="arrow-up" _class="stockAdmin plus" _type="success"}){OUTPUT} 
 {ALTERNATE()}{BOX()}Hmm, not found?{BOX}{ALTERNATE} 
 {LIST} 
 {ELSE} 
{BOX()}You'll need to [login|log in] to be able to edit this tracker item.{BOX} 
 {PERM} 
{ELSE} 
Try this [API-Tracker-Update-Demo?itemId=2745] 
{PARAM}

{JQ()}$(".stockAdmin.minus, .stockAdmin.plus") 
 .css("cursor", "pointer") 
 .on( 
 "click", 
 function () { 
 let itemId = location.href.match(/itemId=(\\d+)/); 
 if (itemId) { 
 itemId = itemId[1]; 
 } else { 
 alert("No example number found"); 
 return; 
 } 
 const $stockAdmin = $(".stockAdmin.number"); 
 $stockAdmin.tikiModal(" "); 
 let stock = $stockAdmin.text(); 
 if ($(this).hasClass("minus")) { 
 stock--; 
 } else { 
 stock++; 
 } 
 $.ajax( 
 $.service("tracker", "update_item"), 
 { 
 type: 'POST', 
 dataType: 'json', 
 data: { 
 fields: { 
 exampleNumber: stock 
 }, 
 itemId: itemId, 
 trackerId: 18 
 }, 
 success: function (data) { 
 if (! data) { 
 alert("Oops, something went wrong, sorry"); 
 } else { 
 $stockAdmin.text(stock); 
 } 
 $(".stockAdmin.number").tikiModal(); 
 } 
 } 
 ).fail(function(jqXHR, textStatus, errorThrown) { 
 alert( "error: " + textStatus); 
 debugger; 
 $(".stockAdmin.number").tikiModal(); 
 }); 
 return false; 
 }){JQ}

Page source is [tiki-pagehistory.php?page=API+Tracker+Update+Demo&source=0|here]