llop through characters in textbox

I would like to be able to loop through characters in a textbox and index them, work out their position and when a new line is started (i.e. when the text reaches the edge of the text box and wraps or when the enter key is pressed.)
Al4ddin2Asked:
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leakim971Connect With a Mentor PluritechnicianCommented:
test page : http://jsfiddle.net/gr9sywt0/1/
var str = document.getElementById("TexboxID").value;
for(var i=0;i<str.length;i++) {
   var character =str.charAt(i)
   alert( character  );
}

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<input type="text" id="TexboxID" value="hello" />
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Al4ddin2Author Commented:
Thanks, say the contents of the textbox has some script that inserts the contents of the textbox into these tags [div]{content to check is in here}[/div] how do I then remove these to do the indexing?
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Al4ddin2Author Commented:
i.e. rich text formatting
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