abstract:function checkall(){
var checkall,item;
checkall=document.getElementById('checkall');
item=getElementsByName('item');
for (var i = 0; i < item.length; i++) {
if (checkall.checked) {
item[i].checked=true;
}
else{
item[i].checked=false;
}
}
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Correcting teacher:天蓬老师Correction time:2018-12-16 09:01:20
Teacher's summary:利用复选框进行全选操作,name属性值是关键,请用数组形式