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// HTML部分

<input type="checkbox" id="selectAll">全選/取消全選

<br>

<input type="checkbox" class="itemCheckbox">選項(xiàng)1

<br>

<input type="checkbox" class="itemCheckbox">選項(xiàng)2

<br>

<input type="checkbox" class="itemCheckbox">選項(xiàng)3

... //其他選項(xiàng)

<script type="text/javascript">

// Javascript部分

var selectAll = document.getElementById("selectAll");

var itemCheckboxes = document.getElementsByClassName("itemCheckbox");

function toggleselect() {

for (var i = 0; i < itemCheckboxes.length; i++) {

itemCheckboxes[i].checked = !itemCheckboxes[i].checked;

}

}

selectAll.addEventListener('change', function () {

if(this.checked) {

toggleselect();

} else {

for (var i = 0; i < itemCheckboxes.length; i++) {

itemCheckboxes[i].checked = false;

}

}

});

</script>