本文实例讲述了javascript中DOM复选框选择用法。分享给大家供大家参考。具体如下：
<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>复选框全选全清和反选</title> <script type="text/javascript"> //取得所有的复选框对象数组 function GetAllCheckBox() { var div = document.getElementById("Balls"); var inputs = div.getElementsByTagName("input"); //定义复选框数组，用来返回 var checkboxs = new Array(); var nIndex = 0; for (var i = 0; i < inputs.length; i++) { //通过type是否为checkbox来判断复选框 if (inputs[i].type == "checkbox") { checkboxs[nIndex] = inputs[i]; nIndex++; } } return checkboxs; } //全选 function selAll() { var checkboxs = GetAllCheckBox(); for (var i = 0; i < checkboxs.length; i++) { checkboxs[i].checked = true; } } //全清 function clearAll() { var checkboxs = GetAllCheckBox(); for (var i = 0; i < checkboxs.length; i++) { checkboxs[i].checked = false; } } //反选 function reverseAll() { var checkboxs = GetAllCheckBox(); for (var i = 0; i < checkboxs.length; i++) { if (checkboxs[i].checked == true) { checkboxs[i].checked = false; } else { checkboxs[i].checked = true; } } } </script> </head> <body> <div> <input type="checkbox" /><label for="c1">足球</label> <input type="checkbox" /><label for="c2">台球</label> <input type="checkbox" /><label for="c3">乒乓球</label> <br /> <input type="button" value="全选" /> <input type="button" value="全清" /> <input type="button" value="反选" /> </div> </body> </html>
希望本文所述对大家的javascript程序设计有所帮助。
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