日期:2014-05-16  浏览次数:20549 次

js实现全选功能
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030">
<title>Insert title here</title>
<script type="text/javascript">
function selAll(obj) {
	var items = document.getElementsByTagName("input");
	for(var i=0; i<items.length; i++) {
		if(items[i].type == "checkbox" && items[i].name == "checkSel") {	
			items[i].checked = obj.checked;
		}
	}
}

function funCheck() {
	var flag = true;
	var items = document.getElementsByTagName("input");
	for(var i=0; i<items.length; i++) {
		if(items[i].name == "checkSel") {
			if(!items[i].checked) {
				flag = false;
				break;	
			}
		}
	}
	document.getElementById("cbSelectAll").checked = flag;
}

</script>
</head>
<body>
<table border="1" align="center" style="margin-top: 80px; width:50%">
	<tr>
		<th align="left" width="10%">
			<input type="checkbox" id='cbSelectAll' onclick="selAll(this);">
		</th>
		<th>标题</th>
	</tr>
	<tr>
		<td>
			<input type="checkbox" name='checkSel' onclick="funCheck()">
		</td>
		<td>1</td>
	</tr>
	<tr>
		<td>
			<input type="checkbox" name='checkSel' onclick="funCheck()">
		</td>
		<td>2</td>
	</tr>
	<tr>
		<td>
			<input type="checkbox" name='checkSel' onclick="funCheck()">
		</td>
		<td>3</td>
	</tr>
	
</table>
</body>
</html>
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