9.2全选和全不选

最新推荐文章于 2022-09-12 14:29:17 发布

原创最新推荐文章于 2022-09-12 14:29:17 发布 · 163 阅读

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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
</head>

<body>
<table border="1px" id="tb">
	<tr>
    	<td>
        	<input type="checkbox" onClick="fun()" id="tb1">
        </td>
    </tr>
    <tr>
    	<td>
        	<input type="checkbox" name="cb1" >
        </td>
    </tr>
    <tr>
    	<td>
        	<input type="checkbox" name="cb1">
        </td>
    </tr>
    <tr>
    	<td>
        	<input type="checkbox" name="cb1">
        </td>
    </tr>
    <tr>
    	<td>
        	<input type="checkbox" name="cb1">
        </td>
    </tr>
    
  
</table>

<script>
	function fun(){
		var a = document.getElementById("tb1")
		var b = a.checked;
//获取的状态(是否选择)
		var c = document.getElementsByName("cb1");
		if(b==true){
			for(var i=0;i<c.length;i++){
				var d = c[i];
				d.checked = true;
			}
		}else {
			for(var i=0;i<c.length;i++){
				var d = c[i];
				d.checked = false;
			}
		}
	}
</script>
</body>
</html>