Wim Hof breathing method

Helped me when I was disabled

Live Demo

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Realised what the bug was!

Omitting the option { once: true } in added event lister, to have it to only fire one time, was breaking the app...

Using .addEventListener()’s once Option

The .addEventListener() method comes with a tool to help clean itself up if it’s intended for a one-time use: the once option. It’s about as simple as it sounds. If it’s set to true, the listener will automatically remove itself after first being invoked:

const button = document.getElementById('button');

button.addEventListener('click', () => {
    console.log('clicked!');
}, { once: true });

// 'clicked!'
button.click();

// No more listeners!
getEventListeners(button) // {}

Assuming it fits your use case, this approach might be appropriate if you’re keen on using an anonymous function, given that your listener only needs to be invoked once.

About Event Listeners