html - Format the text in JavaScript alert box

Question

How can I format the text in a JavaScript alert box? I need a word in the text to be underlined.

Answer 1

You can use only:

 = Backspace 
f = Form feed 

 = New line 

 = Carriage return 
 = tab
00 = octal character 
x00 = hexadecimal character 
u0000 = hexadecimal unicode character

So, you can insert different ASCII characters, but not format them (like italic or bold).

EDIT I also have to mention, that in fact alert acts like toString conversion, so including tags and/or styles is not possible.