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  1. #1
    New Coder
    Join Date
    Sep 2006
    Thanked 0 Times in 0 Posts

    limit character input (by count) with : in textarea name

    I have a nice js character limit script I have used for a long time with no problem.
    function limitText(limitField, limitCount, limitNum) {
    	if (limitField.value.length > limitNum) {
    		limitField.value = limitField.value.substring(0, limitNum);
    	} else { limitCount.value = limitNum - limitField.value.length; }}
    I now have a form processor that has a naming system
    textarea name=5)MIN:TXT:message
    the element trigger looks like
    <textarea name=5)MIN:TXT:message cols=40 rows=14 
    And the limit script baulks at the characters ) : in the name.

    I have tried quotes, escaped quotes and characters and various incantations but can't seem to convince it to work.

    Any suggested fix on this one - or pointers to another similar script that will cope with this naming system.


  • #2
    Supreme Master coder! Old Pedant's Avatar
    Join Date
    Feb 2009
    Thanked 4,848 Times in 4,809 Posts
    Actually, it balks even at the leading digit in the name.

    If you won't follow normal naming rules for form fields you have to
    (1) Ensure that you put "..." around the entire name.
    (2) Use form["..."] in the JS code to refer to the field.


    But you really never needed to refer to THAT <textarea> by name in that JS code, in the first place.

    Just do this:
    <textarea name="5)MIN:TXT:message"
             onkeyup  ="limitText(this,this.form.countdown,10);"
    ><?php echo $value[5];?></textarea>
    Notice carefully the quotes around the field name.
    Notice that just this alone specifies the current field! nothing else needed.

    Stop using PHP to output complex HTML. Do as I show there: Output the HTML, yes, and then only use the minimal PHP needed to output the contents.

    Oh...and upper case letters in event handler names is obsolete. onkeyup and onkeydown are correct.
    An optimist sees the glass as half full.
    A pessimist sees the glass as half empty.
    A realist drinks it no matter how much there is.

  • #3
    New Coder
    Join Date
    Sep 2006
    Thanked 0 Times in 0 Posts
    Yes - and yes again.

    The naming system fits with a generic form processor with lots of options - fed via the name.

    And - this,this.form.
    part of (this) element - obvious now you point it out.

    >> Stop using PHP to output complex HTML
    Yes, I do tend to just set up <? and type away.

    Thanks so much.
    You have helped me before -


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