JS代码：
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function checkall(obj,name) { var boxs = document.getElementsByName(name); for(var i=boxs.length;i--;){ boxs[i].checked = obj.checked; } } |
Posts Tagged: JavaScript
14
Apr 10
JavaScript实现Checkbox全选功能
8
Apr 10
JavaScript检测Checbox是否被选中
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<html> <head> <script language=javascript> function validate(chk){ if (chk.checked == 1) alert("Thank You"); else alert("You didn't check the box yet...") } </script> </head> <body> <form> <input type=checkbox name=chk1/>Please Check Me <p><input type=button value="check" onclick="return validate(chk1);"/> </p></form> </body> </html> |
8
Apr 10
JavaScript判断radio是否被选中
JS脚本判断radio单选是否被选中，如果没有选中，弹出提示框。
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<html> <head> <title>js判断radio是否被选中</title> <script language="javascript" type="text/javascript"> <!-- function validr(){ var resualt=false; for(var i=0;i<document.form1.contentx.length;i++) { if(document.form1.contentx[i].checked) { resualt=true; } } if(!resualt) { alert("请选择一个选项"); } return resualt; } --> </script> </head> <body bgcolor="#ffffff"> <h1> 测试是否被选中 </h1> <form method="post" action="voteservlet" name="form1" onsubmit="return(validr())"> <br /><br /> 请选择：<br /> <input type="radio" name="contentx" value="A" />AAAAAAAAAA<br /> <input type="radio" name="contentx" value="B" />BBBBBBBBBB<br /> <input type="radio" name="contentx" value="C" />CCCCCCCCCC<br /> <input type="radio" name="contentx" value="D" />DDDDDDDDDD<br /> <input type="submit" name="Submit" value="投票"/> <input type="reset" value="重新选择"/> </form> </body> </html> |