javascript - Unexpected token ILLEGAL in webkit

Question

// if the box is outside the window, move it to the end
function checkEdge() {
    var windowsLeftEdge = $('#window').position().left;

    $('.box').each( function(i, box) {
        // right edge of the sliding box
        var boxRightEdge = $(box).position().left + $(box).width();

        // position of last box + width + 10px
        var newPosition = getNewPosition();

        if ( parseFloat(boxRightEdge) < parseFloat(windowsLeftEdge) ) { 
            $(box).css('left', newPosition);
            $(box).remove().appendTo('#window');
            first = $('.box:first').attr('class');
        }
    });
}? //Uncaught SyntaxError: Unexpected token ILLEGAL Occurs Here

// arrange the boxes to be aligned in a row
function arrangeBoxes() {
    $('.box').each( function(i, item) {
        var position = $('#window').position().left + i * ( $(item).width());
        $(item).css('left', position+'px')
    });
}

// shifts all the boxes to the left, then checks if any left the window
function shiftLeft() {
    $('.box').animate({'left' : "-=100px"}, 5000, 'linear', checkEdge());
}

// returns the new location for the box that exited the window
function getNewPosition() {
    return $('.box:last').position().left + $('.box:last').outerWidth();
}

$(window).load(function() {
      arrangeBoxes();
    shiftLeft();
    setInterval('shiftLeft()', 5000);

    $('#gallery-slideshow').nivoSlider({
        effect:'fade', //Specify sets like: 'fold,fade,sliceDown'
        slices:15,
        animSpeed:500, //Slide transition speed
        pauseTime:3000,
        startSlide:0, //Set starting Slide (0 index)
        directionNav:true, //Next & Prev
        directionNavHide:true, //Only show on hover
        controlNav:false, //1,2,3...
        keyboardNav:false, //Use left & right arrows
        pauseOnHover:false, //Stop animation while hovering
        manualAdvance:false, //Force manual transitions
        captionOpacity:0, //Universal caption opacity
        beforeChange: function(){},
        afterChange: function(){},
        slideshowEnd: function(){}, //Triggers after all slides have been shown
        lastSlide: function(){}, //Triggers when last slide is shown
        afterLoad: function(){} //Triggers when slider has loaded
    });

});

$(document).ready(function(){

    $('.class-table tr').click(function(){
        window.location=$(this).find("a").attr("href"); return false;
    });

    $('.special-workshop').click(function(){
        window.location=$(this).find("a").attr("href"); return false;
    });

});

I am getting an Uncaught SyntaxError: Unexpected token ILLEGAL on the line mentioned above. It occurs only in Google Chrome and Safari. It works in Firefox and the same code works on this JSBin (http://jsbin.com/uceqi/18)

What is going on?

There are numerous references to this problem on Stackoverflow but none of them seem to apply to this situation.

If it helps JSLint also throws and error on that line character 2 "Problem at line 22 character 2: Unexpected '?'."

Answer 1

Delete all invisible characters (whitespace) around that area, then give it another try.

I've seen that error in Safari when copy/pasting code. You can pick up some invalid (and unfortunately invisible) characters.

Used to happen to me a lot when copying from jsFiddle.