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<select class="select">2
<option value="1">One</option>3
<option value="2">Two</option>4
<option value="3">Three</option>5
<option value="4">Four</option>6
<option value="5">Five</option>7
<option value="6">Six</option>8
<option value="7">Seven</option>9
<option value="8">Eight</option>10
</select>1
1
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const selectEl = document.querySelector('.select');2
selectEl.addEventListener('shown.mdb.select', (e) => {3
console.log(e)4
const optionsEl = document.querySelectorAll('.select-option');5
const icon = '<i class="flag flag-united-states"></i>'6
optionsEl[0].insertAdjacentHTML('beforeend', icon)7
}, {once: true}) Console errors: 0