家庭做業javascript
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title>家庭做業</title> <script src="jquery-3.1.1.js" type="text/javascript"></script> <script type="text/javascript"> $(function () { //全選 $("#btnCheckall").bind("click", function () { $("[name = chkItem]:checkbox").attr("checked", true); }); //全不選 $("#btnCheckNone").bind("click", function () { $("[name = chkItem]:checkbox").attr("checked", false); }); //反選 $("#btnCheckReverse").bind("click", function () { $("[name = chkItem]:checkbox").each(function () { $(this).attr("checked", !$(this).attr("checked")); }); }); // 提交 $("#btnSubmit").bind("click", function () { var result = new Array(); $("[name = chkItem]:checkbox").each(function () { if ($(this).is(":checked")) { result.push($(this).attr("value")); } }); alert(result.join(",")); }); }); </script> </head> <body> <div> <input name="chkItem" type="checkbox" value="籃球"/>籃球 <input name="chkItem" type="checkbox" value="足球"/>足球 <input name="chkItem" type="checkbox" value="游泳"/>游泳 <input name="chkItem" type="checkbox" value="跑步"/>跑步 <br/> <br/> </div> <div> <input id="btnCheckall" type="button" value="全選"/> <input id="btnCheckNone" type="button" value="全不選"/> <input id="btnCheckReverse" type="button" value="反選"/> <input id="btnSubmit" type="button" value="提交"/> </div> </body> </html>
不明白啊 不明白啊 不明白html