Odd behavior in javascript

When I write this:

var loc = "a,a\n";
alert(loc);

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It shows "a..." in alert. Then after I add some values in loc as

loc = loc + "abc," + valueFromFunc;
alert(loc);

It shows "ab...a,a\nabc,value" in alert. Why I get a.. and ab.. in loc? I want loc to be "a,a\nabc,value"

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I'm using Google Chrome. When I tried it in IE it works great but in chrome I got above output.

Screen shot of my google chrome:

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I think that thing with the dots is from the browser. In Win Chrome it appears, but under Linux - no.

If you want to dispalay \n use a double slash, to show the second one.

var loc = "a,a\\n";
var valueFromFunc = "gdfgdfg fdgdfg";
loc = loc + "abc," + valueFromFunc;
alert(loc);