javascript - set focus on particular control

I have 5 textarea...and I need to control which one has focue...how is that done?

    <TEXTAREA onKeyUp="javascript:countChars();" id=textarea1 name=textarea1 rows=7 cols=43></TEXTAREA><br />
      No. of characters:&nbsp; <INPUT id=text1 name=text1 style="borderWidth:0;border:none;" size=5 value=0 readonly>
      <BR> <BR>
LVL 10
GlobaLevelProgrammerAsked:
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Gurvinder Pal SinghConnect With a Mentor Commented:
document.getElementById("textarea1").focus();
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HainKurtSr. System AnalystCommented:
"javascript:countChars(this);"

and add a param to the js function

function countChars(ta){
... use ta, it will give you which textarea you are working with...
}
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Gurvinder Pal SinghCommented:
if you want to know which one has focus, then add the following javascript at body onload event

var latestTextArea;
document.getElementsByTagName("textarea").onkeyup = function(this){
  latestTextArea = this.getAttribute("id");
};

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Gurvinder Pal SinghCommented:
now when ever you will press a key, 'latestTextArea' will be updated with the id of the latest TextArea

you can also do the same on the onfocus event (just replace onkeyup with onfocus)

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