Question

I have an image that I am trying to rotate 30 degrees and move horizontally across a page. However, I don’t think I am handling the jquery right because I am getting several errors in the Firefox Web Console. Here are the errors:

[10:30:27.260] ReferenceError: jQuery is not defined @ file:///home/ladmin/Desktop/javascriptAnimations/jquery.rotate.1-1.js:1
[10:30:27.274] The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must to be declared in the document or in the transfer protocol. @ file:///home/ladmin/Desktop/javascriptAnimations/si110cockroach.html
[10:31:03.416] ReferenceError: $ is not defined @ file:///home/ladmin/Desktop/javascriptAnimations/si110cockroach.html:12

I included the script tags with the jquery source at the top like this:

<script language="javascript" type="text/javascript" src="jquery.rotate.1-1.js"></script>

And here is the code where I call the jquery:

function moveLeft(object,x,y){
        $(object).rotateRight(30);
        object.style.right = x + "px";
        object.style.top   = y + "px";

        if (x < 0 || x > 1500 || y < 0 || y > 1500)
        {
            object.style.visibility="hidden";
        }
        else
        {               
            var t = setTimeout(function() { moveLeft(object,x+3,y+0); }, 5);
        }
    }

Am I not including the source file right or am I not calling the jquery right?

Answer 1

You have to include jquery.min.js before the jquery.rotate.1-1.js script:

<script language="javascript" type="text/javascript" src="jquery.min.js"></script>
<script language="javascript" type="text/javascript" src="jquery.rotate.1-1.js"></script>