JavaScript axerror:unexpected token Illegal very simple code, but cannot explain the error

First look at the following code, the picture is written with notepad++, the above two code below the same, but the following is an error

Start feeling is not a variable name problem, the results found not

For this wonderful problem, I can only post code, helpless!!!

"text/javascript  ">            function f1 () {            var999;            alert (n);        }        F1 ();             </script>        <script type="text/javascript">            function F2 () {        　　var999;  Alert (m);         }        F2 ();            　 </script>
If there is an expert in the words, can you explain?
It turns out that the display inside the notepad++ is a little different:
Finally decisive choice error line front of the space, deleted, and then hit three tab key:
Appeared, with the usual dashed lines of God:
The problem actually out of the code in front of the white space character, this code was originally edited with the UltraEdit editor, the amount, if you are out of the same problem with me, this may be able to save you!
The error code is pasted:
axerror:unexpected token illegal
Element
 
 

  
  
 
   
 
    
Font
 
   
 
   
 
    
Font-family
 
    
 
   
 
   
 
    
Font-size
 
    
 
   
 
   
 
    
Font-style
 
    
 
   
 
   
 
    
Font-variant
 
    
 
   
 
   
 
    
Font-weight
 
    
 
   
 
   
 
    
Letter-spacing
 
    
 
   
 
   
 
    
Line-height
 
    
 
   
 
   
 
    
Text-decoration
 
    
 
   
 
   
 
    
Text-align
 
    
 
   
 
   
 
    
Text-indent
 
    
 
   
 
   
 
    
Text-transform
 
    
 
   
 
   
 
    
White-space
 
    
 
   
 
   
 
    
Word-spacing
 
    
 
   
 
   
 
    
Color
 
    
 
   
 
   
 
    
Background
 
   
 
   
 
    
Bg-attachment
 
    
 
   
 
   
 
    
Bg-color
 
    
 
   
 
   
 
    
Bg-image
 
    
 
   
 
   
 
    
Bg-position
 
    
 
   
 
   
 
    
Bg-repeat
 
    
 
   
 
   
 
    
Box
 
   
 
   
 
    
Width
 
    
 
   
 
   
 
    
Height
 
    
 
   
 
   
 
    
Border-top
 
    
 
   
 
   
 
    
Border-right
 
    
 
   
 
   
 
    
Border-bottom
 
    
 
   
 
   
 
    
Border-left
 
    
 
   
 
   
 
    
Margin
 
    
 
   
 
   
 
    
Padding
 
    
 
   
 
   
 
    
Max-height
 
    
 
   
 
   
 
    
Min-height
 
    
 
   
 
   
 
    
Max-width
 
    
 
   
 
   
 
    
Min-width
 
    
 
   
 
   
 
    
Outline-color
 
    
 
   
 
   
 
    
Outline-style
 
    
 
   
 
   
 
    
Outline-width
 
    
 
   
 
   
 
    
Positioning
 
   
 
   
 
    
Position
 
    
 
   
 
   
 
    
Top
 
    
 
   
 
   
 
    
Bottom
 
    
 
   
 
   
 
    
Right
 
    
 
   
 
   
 
    
Left
 
    
 
   
 
   
 
    
Float
 
    
 
   
 
   
 
    
Display
 
    
 
   
 
   
 
    
Clear
 
    
 
   
 
   
 
    
Z-index
 
    
 
   
 
   
 
    
List
 
   
 
   
 
    
List-style-image
 
    
 
   
 
   
 
    
List-style-type
 
    
 
   
 
   
 
    
List-style-position
 
    
 
   
 
   
 
    
Table
 
   
 
   
 
    
Vertical-align
 
    
 
   
 
   
 
    
Border-collapse
 
    
 
   
 
   
 
    
Border-spacing
 
    
 
   
 
   
 
    
Caption-side
 
    
 
   
 
   
 
    
Empty-cells
 
    
 
   
 
   
 
    
Table-layout
 
    
 
   
 
   
 
    
Effects
 
   
 
   
 
    
Text-shadow
 
    
 
   
 
   
 
    
-webkit-box-shadow
 
    
 
   
 
   
 
    
Border-radius
 
    
 
   
 
   
 
    
Other
 
   
 
   
 
    
Overflow
 
    
 
   
 
   
 
    
Cursor
 
    
 
   
 
   
 
    
Visibility
 
    
 
   
 
  
 
 
JavaScript axerror:unexpected token Illegal very simple code, but cannot explain the error