Change the characterstyle in all textframes

Question

Hello all,
i have a problem in my javascript script. I want a script that check all textframes in the document and it have to check the characterstyle from each char.
If there is a "-" in the text, the characterstyle will switch to normal. The problem is that i did not find the text in the textframe with the javascript. I´m new in the business.
I think my approach is wrong, but i can´t find an another one.  
My code :
var doc = app.activeDocument;
var tf = doc.textFrames.anyItem();
var paras = tf.paragraphs.everyItem().getElements();
var applied_style = doc.characterStyles.itemByName('Cent');
var paras_with_style = [];
for (var i=0,l=paras.length; i<l; i++) {
   var para = paras[i];
   if (para.appliedCharacterStyle == applied_style) {
      var contenttext = para.contents;
            if (contenttext == "-") {
                    para.changeTextPreferences.position = Position.normal;
  else {
                    para.changeTextPreferences.position = Position.superscript;
Thanks for your help
Greets Alex

Answer 1

Hi Alex
You should use Greps, read Peter Karhels book on it.
See if the below does what you want.
Trevor
var doc = app.properties.activeDocument && app.activeDocument;
app.findTextPreferences = app.changeTextPreferences = null;
app.findTextPreferences.appliedCharacterStyle = 'Cent';
app.findTextPreferences.findWhat = '-';
app.changeTextPreferences.position = Position.NORMAL;
doc.changeText();