JS——全选和全不选

2021-04-25 02:29

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YPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">

标签:type   gre   返回   获取   script   EDA   遍历   padding   color   

1、全选和全不选函数:

getElementById方法:返回对拥有指定ID的第一个对象的引用。
getElementsByName方法:返回带有指定名称的对象的集合。
 

				序号              
				学号
				姓名
				平时成绩
				期末成绩
				
学期总成绩
            

				1
				20100300201
				张小丽
				95
				95
				95
			

				2
				20100300202
				李宁
				90
				88
				89
			

				3
				20100300203
				刘梅
				98
				92
				95
			

				4
				20100300204
				王刚
				98
				90
				94
			

				5
				20100300205
				郑军
				90
				85
				87
			

				6
				20100300206
				杨波
				80
				80
				80
			
getElementById方法获取的是与属性在同一行的复选框的状态,如果已经选中就用getElementsByName方法获取一个集合,并对集合进行遍历将复选框的状态变为选中,否则,将复选框全部变为未选中。
2、完整代码:
"utf-8">
        全选和全不选
"600" border="1" align="center" cellpadding="5" cellspacing="3">
成绩登记表
"checkbox" onclick="checkAll()" id="checkAll"/> "blanchedalmond "align="middle" >序号 "blanchedalmond "align="middle ">学号 "blanchedalmond "align="middle ">姓名 "blanchedalmond "align="middle ">平时成绩 "blanchedalmond "align="middle ">期末成绩 "blanchedalmond "align="middle ">学期总成绩
"checkbox" name="checkOne"/> "middle ">1 "middle ">20100300201 "middle ">张小丽 "middle ">95 "middle ">95 "middle ">95
"checkbox" name="checkOne"/> "grey "align="middle ">2 "grey "align="middle ">20100300202 "grey "align="middle ">李宁 "grey "align="middle ">90 "grey "align="middle ">88 "grey "align="middle ">89
"checkbox" name="checkOne"/> "middle ">3 "middle ">20100300203 "middle ">刘梅 "middle ">98 "middle ">92 "middle ">95
"checkbox" name="checkOne"/> "grey "align="middle ">4 "grey "align="middle ">20100300204 "grey "align="middle ">王刚 "grey "align="middle ">98 "grey "align="middle ">90 "grey "align="middle ">94
"checkbox" name="checkOne"/> "middle ">5 "middle ">20100300205 "middle ">郑军 "middle ">90 "middle ">85 "middle ">87
"checkbox" name="checkOne"/> "grey "align="middle ">6 "grey "align="middle ">20100300206 "grey "align="middle ">杨波 "grey "align="middle ">80 "grey "align="middle ">80 "grey "align="middle ">80

 

  



JS——全选和全不选

标签:type   gre   返回   获取   script   EDA   遍历   padding   color   

原文地址:https://www.cnblogs.com/zhai1997/p/12230382.html


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