Why Don't My JavaScript Events Fire After Appending New Elements?

JavaScript Does Not Fire After Appending

Problem Summary

When adding new input elements to a webpage using JavaScript, subsequent events may not trigger. This is because jQuery is unaware of these newly added elements.

Event Delegation and Bubbling

jQuery works by registering event handlers for specific elements. However, when new elements are added dynamically, these event handlers cannot recognize them. To resolve this, event delegation is used.

Event delegation involves listening for events on a parent element that is already present in the DOM at the time jQuery is loaded. When an event occurs within a nested child element, it bubbles up to the parent element, where the event handler can capture it.

Code Solution

To use event delegation in the provided code, the event handlers for the buttons should be modified to use the on() method. This method allows event listening to be delegated to a parent element.

$(document).on('click', '.races', function(e) {
  // ... rest of the code
});

By using $(document).on(), the event will be delegated to the document object, which is present in the DOM during page load. This ensures that events from newly added .races elements will be captured and handled by the event handler.

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