How to find whether text in a text area is wrapped to multiple lines?

How can I find whether a long text in a textarea is wrapped into two or more lines?

I'm not talking about the new line chars as discussed here.

I'm aware of the plugin Textarea Line Count

Any simpler method?

I experimented on this and came up with a hack that involves the following:

1. Disabling text-wrapping in the textarea (plus disable padding)

2. Checking if the textarea's scrollWidth is greater than it's width.

The basic logic i used was that if the text is spanning multiple lines, that means when wrapping is turned off, we should get a horizontal scrollbar.

Demo: http://jsfiddle.net/fnG3d/

Disclaimer: The code below is the result of a 10 minute fiddle, definitely not production quality

function checkMulti(id) {
    var ta = $('#'+id), multi = false;

    // disable wrapping, padding and enable horiz scoll
    ta.addClass('nowrap');

    // check if there is anything to be scrolled horizontally (means multi-lines otherwise)
    multi = ( ta[0].scrollWidth > ta.width() );

    // checking done. remove the class.
    ta.removeClass('nowrap');

    alert('Spread over multiple-lines: ' + multi);
}

/* the nowrap class */
.nowrap {
    overflow-x: scroll;
    white-space: nowrap;
    padding: 0;
}