日期:2014-05-16 浏览次数:20428 次
<!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> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title></title> </head> <script> window.onload = function(){ document.getElementById("btn").onclick=function(){ var flag1 = document.getElementById("ckb1").checked; if(!flag1){ alert("请先选择复选框1"); return false; } var flag2 = document.getElementById("ckb2").checked; if(!flag2){ alert("请先选择复选框2"); return false; } alert("提交表单"); return true; } } </script> <body> <input id="ckb1" type="checkbox"/> <input id="ckb2" type="checkbox" checked="checked"/> <input id="btn" type="submit" value="submit"/> </body> </html>
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<input type="checkbox" name="checkbox[]" value="原因A" />原因A<br /> <input type="checkbox" name="checkbox[]" value="原因B" />原因B<br /> <input type="checkbox" name="checkbox[]" value="原因C" />原因C<br /> <input type="checkbox" name="checkbox[]" value="others" />其他 <input type="text" id="txt" name="reason" style="display:none;" /> <input id="btnEditOK" type="Submit" disabled="true" class="btnbig" value="提交" onmouseover="this.className='btnbig_over'" onMouseOut="this.className='btnbig'" /> <script type="text/javascript"> var input=document.getElementsByName("checkbox[]"); var txt = document.getElementById("txt"); var btnEditOK = document.getElementById("btnEditOK"); for(var i=0;i<input.length;i++){ input[i].onclick=function(){ var n=0; for(var l=0;l<input.length;l++){ txt.style.display="none"; if(input[l].checked){ n++; if(input[l].value=="others"){ txt.style.display=""; } } } if(n==0){ btnEditOK.disabled=true; }else{ btnEditOK.disabled=false; } } } </script>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <title> New Document </title> <meta http-equiv="Content-Type" content="text/html" charset="gbk"/> <meta name="Generator" content="EditPlus"> <meta name="Author" content=""> <meta name="Keywords" content=""> <meta name="Description" content=""> </head> <script type="text/javascript"> function check(){ var checkBox=document.getElementsByTagName("input"); var i,num=0; for(i=0;i<checkBox.length-1;i++){ if(!check