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<select id="fruits" size="3"> <option>Apple</option> <option>Banana</option> <option>Carrot</option> </select> <button type="button" id="btn-disabled">Disabled</button>
document.addEventListener("DOMContentLoaded", () => { let elBtnDisabled = document.getElementById("btn-disabled"); elBtnDisabled.addEventListener("click", e => e.currentTarget.previousElementSibling.disabled = true); });
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by DevDic
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