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Javascript to autotab to next input field after max characters entered

Posted on 2001-07-20
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Last Modified: 2010-05-18
I need some javascript that will tab to the next input box once the maximum number of characters has been entered.  This is for entry of a telephone number and we need three different input boxes but don't want users to have to tab each time.  I'm sure this is simple, but I don't know how to do it.
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Question by:juliefernandes
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knightEknight earned 150 total points
ID: 6303214
<INPUT type='text' name='field1' maxlength='3'
  onKeyUp='if(this.value.length==3)this.form.field2.focus();'>

<INPUT type='text' name='field2' maxlength='3'
  onKeyUp='if(this.value.length==3)this.form.field3.focus();'>

<INPUT type='text' name='field3' maxlength='4'>
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Expert Comment

by:knightEknight
ID: 6303223
Remember to surround the whole thing up there with <FORM> and </FORM> tags (especially if you are using Netscape).  Also, if you are using netscape, you must include this at the top of your page:

<SCRIPT language='javascript'>
  if ( document.layers )
    document.captureEvents( Event.KEYUP );
</script>
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by:juliefernandes
ID: 6303224
thanks for the quick response.  perfect!
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