摘要：<!DOCTYPE html><html><head><meta charset="UTF-8"><title>全選</title><style> body{ padding: 0; margi
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>全選</title>
<style>
body{
padding: 0;
margin:0;
}
.box{
height: 200px;
width: 100px;
border: 1px solid #ccc;
margin:20px auto;
border-radius: 10px;
}
.box p{
margin: 0px;
padding: 4px;
}
.box p:first-of-type{
border-bottom: 1px solid #ccc;
}
</style>
</head>
<body>
<div>
<p>
<label><input type="checkbox" id="checkall" onclick="checkAll()">全選</label>
</p>
<p><label><input type="checkbox" name="item[]" >選項(xiàng)1</label></p>
<p><label><input type="checkbox" name="item[]">選項(xiàng)2</label></p>
<p><label><input type="checkbox" name="item[]">選項(xiàng)3</label></p>
<p><label><input type="checkbox" name="item[]">選項(xiàng)4</label></p>
<p><label><input type="checkbox" name="item[]">選項(xiàng)5</label></p>
<p><label><input type="checkbox" name="item[]">選項(xiàng)6</label></p>
</div>
<script>
function checkAll(){
var checkall = document.getElementById('checkall'); //獲取全選框
var item = document.getElementsByName('item[]');//獲取選項(xiàng)框
for(var i=0;i<item.length;i++){
if (checkall.checked) {
item[i].checked = true;
}else{
item[i].checked = false;
}
}
}
</script>
</body>
</html>
批改老師：天蓬老師批改時間：2019-03-26 09:54:24
老師總結(jié)：全選是經(jīng)常用到一個功能, 重點(diǎn)在于控件的命名上, 要與數(shù)組對應(yīng)