checkbox validation
This is a discussion on checkbox validation within the HTML, CSS and Javascript Coding Techniques forums, part of the Web Development category; hi, how to validate checkbox using javascript... advance thanks, Rajkumar...
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11-14-2007, 05:12 AM
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 Re: checkbox validation hi rajkumar, case1: <script language="javascript" type="text/javascript"> function check() { if (document.Form1.chk1.checked == true) alert("Checked"); else alert("Not Checked"); } </script> case2: <script language="javascript" type="text/javascript"> function check() { if (document.getElementById("chkId").checked == true) alert("Checked"); else alert("Not Checked"); } </script>
__________________ ....................... Thanks, Venkatbi...     |
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11-15-2007, 02:38 AM
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 Re: checkbox validation Hi, I hope that, this post will clear ur doubts Code: <SCRIPT TYPE="text/javascript" >
function checkCheckBoxes()
{
if (document.frmTest.CHKBOX_1.checked == false &&
document.frmTest.CHKBOX_2.checked == false &&
document.frmTest.CHKBOX_3.checked == false)
{
alert ('You didn\'t choose any of the checkboxes!');
return false;
}
else
{
return true;
}
}
</SCRIPT>
<form onsubmit="return checkCheckBoxes();" action="">
<input type="checkbox" name="CHKBOX_1" value="1">1</p>
<input type="checkbox" name="CHKBOX_2" value="2">2</p>
<input type="checkbox" name="CHKBOX_3" value="3">3</p>
<input type="submit" value="Submit!" />
</form>
__________________ Krishnakumar.S Beware of Everything -that is un true; stick to the Truth shall succeed slowly but steadily |
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11-15-2007, 07:43 AM
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| Re: checkbox validation hi rajkumar, To check multiple checkbox... function funCheck() { vTmp1=document.myform.getElementsByTagName("checkb oxName"); vInLen=vTmp1.length; for(vI=0;vI<vInLen;vI++) { vRes[vI]=vTmp1.item(vI).getAttribute('checked') if(vRes[vI]==true) { alert("true"+vRes[vI]) } else { alert("false"+vRes[vI]) } } }
__________________ ....................... Thanks, Venkatbi... |
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11-16-2007, 12:32 AM
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 Re: checkbox validation <html> <head> <script type="text/javascript"> function validate(form) { if (!document.form1.sex[0].checked && !document.form1.sex[1].checked) { alert("Please Select Sex"); return false;} if(!document.form1.agree.checked){alert("Please Read the guidelines and check the box below"); return false; } return true; } </script> <body> <table border='0' width='50%' cellspacing='0' cellpadding='0' > <form name=form1 method=post action=action_page.php onsubmit='return validate(this)'> <input type=hidden name=todo value=post> <tr bgcolor='#ffffff'><td align=center > <font face='verdana' size='2'><b>Sex</b> <input type=radio name=sex value='male'>Male </font> <input type=radio name=sex value='female'> <font face='verdana' size='2'>Female</font> </td> </tr> <tr> <td align=center bgcolor='#f1f1f1'> <font face='verdana' size='2'> <input type=checkbox name=agree value='yes'>I agree to terms and conditions </td></tr> <tr bgcolor='#ffffff'> <td align=center > <input type=submit value=Submit> <input type=reset value=Reset> </td> </tr> </table></form> </body> </head> </html> |
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