JS实现复选框全选全不选以及子复选框带动全选框的选中
<!-- JS实现复选框全选全不选以及子复选框带动全选框的选中 -->
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script language="javascript">
function selectAll(o) {
var a = document.getElementsByName("m");
for (var i = 0; i < a.length; i++) {
a[i].checked = o.checked;
}
}
function checkOne(obj) {
if (!obj.checked) {
document.getElementById("all").checked = obj.checked;
}
var b = true;
var arr = document.getElementsByName(obj.name);
for (var i = 0; i < arr.length; i++) {
if (!arr[i].checked) { b = false; break; }
}
document.getElementById("all").checked = b;
}
</script>
</head>
<body>
<table>
<tr>
<td>全选<input type="checkbox" id="all" onclick="selectAll(this)" /></td>
</tr>
<tr>
<td><input type="checkbox" name="m" onclick="checkOne(this)" /></td>
</tr>
<tr>
<td><input type="checkbox" name="m" onclick="checkOne(this)" /></td>
</tr>
<tr>
<td><input type="checkbox" name="m" onclick="checkOne(this)" /></td>
</tr>
<tr>
<td><input type="checkbox" name="m" onclick="checkOne(this)" /></td>
</tr>
<tr>
<td><input type="checkbox" name="m" /></td>
</tr>
</table>
<a href="javascript:selectOne()">asdadasdd</a>
</body>
</html>
