textarea to open in select choices

this code opens a textarea if user selects tue

I want the textarea to open if user selects tue or wed
<!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=utf-8" />
<title>Untitled Document</title>
<script language="javascript">
  function chgDisplayTextarea(value, textarea, switchValue) {
    document.getElementById(textarea).style.display = (value.indexOf(switchValue)==0)?"block":"none";
  }
</script>
</head>
<body>
<form method="post" action="pb-dropck.php">
    <select name=t1 onchange="chgDisplayTextarea(this.value, 'textareaID', 'Tue')">
        <option value=Mon $Mon>Mon</option>
        <option value=Tue $Tue>Tue</option>
        <option value=Wed $Wed>Wed</option>
        <option value=Thu $Thu>Thu</option>
        <option value=Fri $Fri>Fri</option>
        <option value=Sat $Sat>Sat</option>
        <option value=Sun $Sun>Sun</option>
    </select>
    <input type=submit value=Submit>
    <textarea id="textareaID" cols="20" rows="20" style="display:none"></textarea>
</form>
</body>
</html>

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LVL 1
rgb192Asked:
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ploftinConnect With a Mentor Commented:
Use this.
<!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=utf-8" />
<title>Untitled Document</title>
<script language="javascript">
  function chgDisplayTextarea(value, textarea) {
	switch(value) {
      case "Tue":
        document.getElementById(textarea).style.display = "block";
        break;
      case "Wed":
        document.getElementById(textarea).style.display = "block";
        break;
      default:
        document.getElementById(textarea).style.display = "none";
    }
  }
</script>
</head>
<body>
<form method="post" action="pb-dropck.php">
    <select name=t1 onchange="chgDisplayTextarea(this.value, 'textareaID')">
        <option value=Mon $Mon>Mon</option>
        <option value=Tue $Tue>Tue</option>
        <option value=Wed $Wed>Wed</option>
        <option value=Thu $Thu>Thu</option>
        <option value=Fri $Fri>Fri</option>
        <option value=Sat $Sat>Sat</option>
        <option value=Sun $Sun>Sun</option>
    </select>
    <input type=submit value=Submit>
    <textarea id="textareaID" cols="20" rows="20" style="display:none"></textarea>
</form>
</body>
</html>

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0
 
Om PrakashCommented:
Try
<!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=utf-8" />
<title>Untitled Document</title>
<script language="javascript">
  function chgDisplayTextarea(value, textarea, switchValue) {
    var word = switchValue.split(",")
    for(i=0; i < word.length ; i++)
    {
    if(value == word[i])
    {
		document.getElementById(textarea).style.display = "block";
		exit;
		}
	else
		document.getElementById(textarea).style.display = "none";

    }
  }
</script>
</head>
<body>
<form method="post" action="pb-dropck.php">
    <select name=t1 onchange="chgDisplayTextarea(this.value, 'textareaID', 'Tue,Wed')">
        <option value=Mon $Mon>Mon</option>
        <option value=Tue $Tue>Tue</option>
        <option value=Wed $Wed>Wed</option>
        <option value=Thu $Thu>Thu</option>
        <option value=Fri $Fri>Fri</option>
        <option value=Sat $Sat>Sat</option>
        <option value=Sun $Sun>Sun</option>
    </select>
    <input type=submit value=Submit>
    <textarea id="textareaID" cols="20" rows="20" style="display:none"></textarea>
</form>
</body>
</html>

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0
 
Michel PlungjanIT ExpertCommented:
onchange="document.getElementById('textareaID').style.display=this.selectedIndex<2?'none':'block'"
0
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rgb192Author Commented:
om_prakash_p
works
but I get javascript error
'exit' is undefined
0
 
ploftinCommented:
Try mine. It works, and no JavaScript errors.
0
 
Om PrakashConnect With a Mentor Commented:
Use break instead of exit.
<!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=utf-8" />
<title>Untitled Document</title>
<script language="javascript">
  function chgDisplayTextarea(value, textarea, switchValue) {
    var word = switchValue.split(",")
    for(i=0; i < word.length ; i++)
    {
    if(value == word[i])
    {
		document.getElementById(textarea).style.display = "block";
		break;
		}
	else
		document.getElementById(textarea).style.display = "none";

    }
  }
</script>
</head>
<body>
<form method="post" action="pb-dropck.php">
    <select name=t1 onchange="chgDisplayTextarea(this.value, 'textareaID', 'Tue,Wed')">
        <option value=Mon $Mon>Mon</option>
        <option value=Tue $Tue>Tue</option>
        <option value=Wed $Wed>Wed</option>
        <option value=Thu $Thu>Thu</option>
        <option value=Fri $Fri>Fri</option>
        <option value=Sat $Sat>Sat</option>
        <option value=Sun $Sun>Sun</option>
    </select>
    <input type=submit value=Submit>
    <textarea id="textareaID" cols="20" rows="20" style="display:none"></textarea>
</form>
</body>
</html>

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0
 
rgb192Author Commented:
thanks
0
 
ploftinCommented:
My pleasure. Thanks for the points.
0
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