I was wondering if there is actual difference ' and ".
I kinda thought it was like preference, some people like to put ' and others ".
But I was reverse engineering some jQuery plugin and I noticed both ' and ".
There was actually no reason. I know that you can't use " inside " like in PHP, ie.:
echo "Your ID is: '. $id ."'.";
But there was no requirement to use both of them in one file.
If I would replace them all with " or ', file would work exactly same.
You may consider it stupid. But I am just interested. It's an discussion, not real question.