note 46952 deleted from language.variables.external by danbrown

Note Submitter: pascal dot poncet at netconsult dot com ---- Concerning the use of both javascript and php in working with forms : In a php code, it's quiet easy and practical to use names like "fieldname[]" in checkbox input type html elements. You will then retrieve the value(s) transmitted in the "fieldname" array type variable. But a difficulty appears in coding some javascript function able to manipulate those fields values to verify them, as "fieldname[]" must not be recognize directly as an array in the script. Here is a nice way to solve this question : (html code) <form method="post" action="..." onsubmit="return verifyForm(this)"> <input type="checkbox" name="colors[]" value="black"> black<br> <input type="checkbox" name="colors[]" value="white"> white<br> <input type="checkbox" name="colors[]" value="other"> other color<br> </form> (javascript code) function verifyForm(form) { var selColors=new String(); for(i=0;i<form["colors[]"].length;i++) if(form["colors[]"][i].checked) selColors+=form["colors[]"][i].value; if(selColors=="") msgErr="You have to check at least one choice of color"; ... } Of course, you may also verify anything else about the checked values, like the value itself, only by using 'form["colors[]"][i].value' instead of '...checked'. Happy to help you, Pascal PS : apologying for my bad english.