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具体代码如下:
<script> //当第一层选项选定,则该选项下的第二层全部被选定 function allSelect(check_v, checkname) { var v_item = document.getElementsByName(check_v); var items = document.getElementsByName(checkname); for (var i = 0; i < items.length; ++i) { if (v_item[0].checked) { items[i].checked = true; } else { items[i].checked = false; } } } //当第二层选项全部被选定,则第一层被选定;若第二层选项至少有一个没被选定,则第一层不被选定 function singleSelect2parent(check_v, checkname) { var v_item = document.getElementsByName(check_v); var items = document.getElementsByName(checkname); var childStatus = true; for (var i = 0; i < items.length; ++i) { childStatus = (childStatus && items[i].checked); } if (childStatus) { v_item[0].checked = true; } else { v_item[0].checked = false; } } //全选按钮,点击全选,则所有选项被选中 function allChecked() { var inputItems = document.getElementsByClassName("checkbox2check"); for (var i = 0; i < inputItems.length; i++) { var checkItems = document.getElementsByName("checkbox" + (i+1)); for (var j = 0; j < checkItems.length; j++) { checkItems[j].checked = true; } inputItems[i].checked = true; } } </script> <style> ul li{ list-style:none; } </style> <div> <input class="checkbox2check" type="checkbox" checked name="checkbox_v1" value="version1" onclick="allSelect('checkbox_v1', 'checkbox1')"><a data-toggle="collapse" data-target="#demo1">版本一<b class="caret"></b></a> <ul id="demo1" class="collapse in"> <li> <input type="checkbox" checked name="checkbox1" value="layer1" onclick="singleSelect2parent('checkbox_v1', 'checkbox1')">v1.0.1</li> <li> <input type="checkbox" checked name="checkbox1" value="layer2" onclick="singleSelect2parent('checkbox_v1', 'checkbox1')">V1.1.1</li> <li> <input type="checkbox" checked name="checkbox1" value="layer3" onclick="singleSelect2parent('checkbox_v1', 'checkbox1')">V1.2.1</li> <li> <input type="checkbox" checked name="checkbox1" value="layer4" onclick="singleSelect2parent('checkbox_v1', 'checkbox1')">V1.3.1</li> </ul> </div> <div> <input class="checkbox2check" type="checkbox" checked name="checkbox_v2" value="version2" onclick="allSelect('checkbox_v2', 'checkbox2')"><a data-toggle="collapse" data-target="#demo2">版本二<b class="caret"></b></a> <ul id="demo2" class="collapse in"> <li> <input type="checkbox" checked name="checkbox2" value="layer5" onclick="singleSelect2parent('checkbox_v2', 'checkbox2')">V2.0.1</li> <li> <input type="checkbox" checked name="checkbox2" value="layer6" onclick="singleSelect2parent('checkbox_v2', 'checkbox2')">V2.1.1</li> <li> <input type="checkbox" checked name="checkbox2" value="layer7" onclick="singleSelect2parent('checkbox_v2', 'checkbox2')">V2.2.1</li> </ul> </div> <div> <input class="checkbox2check" type="checkbox" checked name="checkbox_v3" value="version3" onclick="allSelect('checkbox_v3', 'checkbox3')"><a data-toggle="collapse" data-target="#demo3">版本三<b class="caret"></b></a> <ul id="demo3" class="collapse in"> <li> <input type="checkbox" checked name="checkbox3" value="layer8" onclick="singleSelect2parent('checkbox_v3', 'checkbox3')">V3.0.1</li> <li> <input type="checkbox" checked name="checkbox3" value="layer9" onclick="singleSelect2parent('checkbox_v3', 'checkbox3')">V3.1.1</li> <li> <input type="checkbox" checked name="checkbox3" value="layer10" onclick="singleSelect2parent('checkbox_v3', 'checkbox3')">V3.2.1</li> </ul> </div> <button type="button" onclick="allChecked()">全选</button>
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