The functionality ceases to operate properly once a new element has been added

I am encountering an issue with the "click" action on a newly created element through a jQuery function, as it is not functioning properly.

To demonstrate this problem, I have set up a JSFiddle at the following link (JSFiddle), however, please note that the Ajax request may not work within JSFiddle environment.

The scenario involves two buttons:

<input type="button" onclick="invia('SIC-034031','', 's');" value="AGGIUNGI" style="height: 20px; width: 110px; background-color: #A5EFC5 ; color: #000000; font-family: Arial,Helvetica,sans-serif; font-size: 12px; background-repeat: no-repeat; background-position: left center;" id="iscriviSIC-034031" class="pulsanteIscrizioni" name="xaggiorna"/> 
<input type="button" onclick="invia('SIC-034031','R', 's');" value="RISERVA" style="height: 20px; width: 110px; background-color: #F00000; color: #FFFFFF; font-family: Arial,Helvetica,sans-serif; font-size: 12px; background-repeat: no-repeat; background-position: left center;" id="iscriviRSIC-034031" class="pulsanteIscrizioni" name="xaggiorna"/>

Upon initiating the ajax function for the first time, the response from button one is:

OK;I;SIC-034031

Button two's role is solely for deletion. Button one handles creation.

<input id="iscriviSIC-034031" class="pulsanteIscrizioni" type="button" name="xaggiorna" style="height: 20px; width: 110px; background-color: #03F; color: #FFF; font-family: Arial,Helvetica,sans-serif; font-size: 12px;" value="TOGLI" onclick="invia('SIC-034031','');">

Upon clicking this new button, the ajax function returns:

OK;C;SIC-034031;;

At this point, button one disappears and button two reappears. However, the issue lies in the fact that when I click on the first button, everything functions correctly, but clicking on the second button does not yield desired results.

If you could offer assistance in identifying the root cause of this problem, it would be greatly appreciated.

Thank you ;)

javascriptjqueryhtmlcssajax

Answer №1

When using jQuery, keep in mind that it is only aware of the elements on the page at the time of execution. Any new elements added to the DOM will not be recognized by jQuery. To address this issue, consider using event delegation. This involves bubbling events from newly added items up to a point in the DOM that existed when jQuery initially ran during page load. While many choose to delegate events to the document, it is not necessary to go that far up the DOM tree. It's best practice to delegate to the nearest parent element that was present at the time of page load, as explained here.

$(".pulsanteIscrizioni").on("click", function()

You can update the code like this:

$(document).on("click", '.pulsanteIscrizioni',function()

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