<label><input type="checkbox" id="all"/>全选</label>
<label><input type="checkbox" id="other"/>反选</label>
<label><input type="checkbox" id="none"/>不选</label><input type="checkbox" value="1" name="check" checked/>
<input type="checkbox" value="2" name="check"/>
<input type="checkbox" value="3" name="check" checked/>

window.onload = function(){var all = document.getElementById('all');var other = document.getElementById('other');var none = document.getElementById('none');var arr = new Array();var items = document.getElementsByName('check');all.onclick = function(){for(var i = 0;i<items.length;i++){items[i].checked = true;}}other.onclick = function(){for(var i = 0; i< items.length; i++){if(items[i].checked){items[i].checked = false;}else{items[i].checked = true;}}}none.onclick = function(){for(var i = 0;i < items.length ;i++){items[i].checked = false;}}}

$(function(){$("#all").click(function(){$("input[name='check']").each(function(){this.checked = true;})})$("#other").click(function(){$("input[name='check']").each(function(){this.checked = !this.checked;})});$("#none").click(function(){$("input[name='check']").each(function(){this.checked = false;})})});

$(function(){$("#all").click(function(){$("input[name='check']").each(function(){$(this).attr({checked:true});})})$("#other").click(function(){$("input[name='check']").each(function(){$(this).attr({checked:!this.checked});})});$("#none").click(function(){$("input[name='check']").each(function(){$(this).attr({checked:false});})})});