javascript - How do I disable and then re-enable a Hammer Event properly using Hammer.js? -

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i'm using hammer.js , jquery.hammer.js in order handle multiple different types of events (mostly tap events).

i made wrapper function used any/all tap event listener declarations. function.

var onclick = function(button, callbackfunction, turnbackonafterstartcallback) {     if(turnbackonafterstartcallback != false)     {         turnbackonafterstartcallback = true;     }      if(!button)     {         logresult("error: attempted create hammer click event listener without assigning jquery object listen too...");         return;     }      if(!callbackfunction)     {         logresult("error: attempted create hammer click event listener without assigning callback function...");         return;     }       $(button).hammer().on("tap", function(event)     {         var target = event.target;          // disable button can't spam event....         $(target).hammer().off("tap");          // receive event object, incase need it...         // call our callbackfunction...         if(callbackfunction)         {             callbackfunction(target);         }          // renable button future use if need be.         if(turnbackonafterstartcallback)         {             $(target).hammer().on("tap", callbackfunction);         }     }); };

when register event using function works expected. first disables event listener can't spam event clicking button 100 times... so...

$(target).hammer().off("tap");

then preforms callback functionality if there exists any...

if(callbackfunction) {     callbackfunction(target); }

finally re-enable button future use, unless we've specified not turned on...

// renable button future use if need be. if(turnbackonafterstartcallback) {     $(target).hammer().on("tap", callbackfunction); }

this works during first event launch... however, once trigger event again callback function sent event , not event.target reason...

if remove .off , .on calls works expected can spammed...

for live example checkout jsfiddle... prints result console... first output correct, after isn't expected. https://jsfiddle.net/xupd7nl1/12/

never mind, had dumb moment there...

the issue was calling event listener directly , not through wrapper function, onclick...

in other words change...

if(turnbackonafterstartcallback) {     $(target).hammer().on("tap", callbackfunction); }

to

if(turnbackonafterstartcallback) {     onclick(target, callbackfunction, turnbackonafterstartcallback); }

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