Count number of lines in a text box

[guitardave78]

Hi, i have a tet boxy dynamically populated from an xml file with html
I need to know how many lines of text there are so that i can make the text box resize to fit all in

Thanks

[jbum]

First of all, if you set the textfield's fld.autoSize (to "center" or "left" or whatever), then the textField's fld.textHeight and fld.textWidth properties will automatically change to fit the text when you modify the fld.text property.

However, if you still want to measure the number of lines in your text, you can do this:

var nbrLines = -1;
var charPos = -1;
var str = fld.text;
do {
  charPos = str.indexOf("\r",charPos);
  nbrLines++;
} while (charPos != -1);

// nbrLines now set to correct value

The following code will also work, and it's shorter, however it is less efficient, because it is splitting the string into an array to make the calculation.

var nbrLines = fld.text.split("\r").length;

- Jim

[mkantor]

Or you may need to search for "<br", rather than "\r", depending on the situation.

[mg8]

Your method is flawed jbum.

charPos = str.indexOf("\r",charPos);

that should be:

charPos = str.indexOf("\r",charPos+1);