abstract：<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>选择/全选</title> <style> .box{ width: 120px; height: 250px; border:&nbs
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>选择/全选</title>
<style>
.box{
width: 120px;
height: 250px;
border: 1px solid #ccc;
border-radius: 5px;
padding: 5px 10px;
margin: 20px auto;
}
.box div{
border-bottom: 1px solid #000;
padding-bottom: 10px;
margin-bottom: 8px;
}
.box input{
margin:8px;
}
</style>
<script>
function checkAll() {
var checkall,item;
checkall = document.getElementById('checkall')
item = document.getElementsByName("item[]")
for (var i=0; i<item.length;i++) {
if(checkall.checked){
item[i].checked=true;
}else{
item[i].checked=false;
}
}
}
</script>
</head>
<body>
<div>
<div>
<input type="checkbox" id="checkall" onclick="checkAll()"><label for="checkall">全选</label>
</div>
<input type="checkbox" name="item[]">选项1<br>
<input type="checkbox" name="item[]">选项2<br>
<input type="checkbox" name="item[]">选项3<br>
<input type="checkbox" name="item[]">选项4<br>
<input type="checkbox" name="item[]">选项5<br>
<input type="checkbox" name="item[]">选项6<br>
</div>
</body>
</html>
Correcting teacher：天蓬老师Correction time：2018-12-11 15:30:37
Teacher's summary：要注意, 复选框的name属性 , 必须是一个数组的名称