Carriage return in <textarea> - how do I check for and remove it???

I have an html form that has a <textarea> element for user input. I work mainly with Java and some JavaScript. Since carriage returns are permitted in a <textarea> element, upon retrieving the value submitted, my Java and/or JavaScript variables contain carriage returns as well, making the values incomplete.

For Example :

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String dataSubmitted = request.getParameter("formInput");
              
<script language="JavaScript">
 var textValue = "<%=dataSubmitted%>";
....//do other stuff
</script>

When I view the source of my JSP page, the above statement of code looks like this:

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var textValue = "This is some text that 
I submitted with a carriage return";

I'm putting the text submitted through this form into a mysql database, and when I pull up the values I find that it has recorded the carriage return as well. There is an actual symbol representing a carriage return in the db field.

What I'd like to do is use some Java code to go through each character of the String and find and remove the carriage return, perhaps replacing it with an empty space instead. But how do I check for a carriage return in a String variable?

Also, is there a way to use JavaScript to alert the user when the carriage return button is pressed when they're in the <textarea>?

Any input is appreciated,
Thank You,
-Love2Java

I received help from a forum member on another forum I'm a member of, he/she showed me how to accomplish what I described above.
Here it is for anyone else who had this problem as well.

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String checkedLine = request.getParameter("formInput").replaceAll("\r\n"," ");

This replaces a carriage return with an empty space. Alternatively, you can replace the carriage return with anything, I'm going to use the html break element myself.

As for the JavaScript portion of my post, this can be accomplished by using the following:

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<textarea onkeypress="if (event.keyCode == 13) alert('You pressed the return button.'); return false;"></textarea>

return false; prohibits the carriage return from being inserted, if you leave that out, the carriage return will insert.