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JavaScript
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<label><input type="checkbox" name="fruits" value="Apple" checked />Apple</label> <label><input type="checkbox" name="fruits" value="Banana" />Banana</label> <label><input type="checkbox" name="fruits" value="Carrot" checked />Carrot</label> <label><input type="checkbox" name="fruits" value="Durian" />Durian</label> <h4>Default Checked</h4> <output id="output"></output>
document.addEventListener("DOMContentLoaded", () => { const $elFruits = document.querySelectorAll("input[name='fruits']"); const $elOutput = document.getElementById("output"); let aFruits = []; $elFruits.forEach(elInput => { if(elInput.defaultChecked) aFruits.push(elInput.value); }); $elOutput.textContent = aFruits.join(", "); });
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