<p> <input id="SampleCheckboxWithoutLabel" type="checkbox" /> Sample Checkbox Without Label </p> <p> <input id="SampleCheckboxWithLabel" type="checkbox" /> <label for="SampleCheckboxWithLabel">Sample Checkbox With Label</label> </p> <p> <label for="SampleCheckboxInsideLabel"> <input id="SampleCheckboxInsideLabel" type="checkbox" /> Sample Checkbox Inside Label </label> </p> <p> <label> <input type="checkbox" /> Sample Checkbox Without ID </label> </p>
$$('input').addEvent('click', function() { alert(this.id); });