Problem of connection symbols in wordpress

CMS & WordPress
1

I want to add some javascript in wordpress, when something like

if(iNum==0&&iNum+1!=l)

it show wrong, in the source code I find ‘&’ become ‘& # 0 3 8 ;’ how to solve? Thanks.

if(iNum==0& # 0 3 8 ; & # 0 3 8 ; iNum+1!=l)

(here I type some space for show the code)

2

Looks like you can’t add javascript like that to post content. See this for workarounds: http://codex.wordpress.org/Using_Javascript

Basically you’ll need to move the code to a js file and then include it in the post.

3

Great, it works. by the way, why I also add two jquery plungin in it. why

<script type="text/javascript">
	var $j = jQuery.noConflict(); 
...
</script>

can work in the head part? or for the better run, I shall also move the code to a js file and then include it in the post? Thank u.