jquery selector selector for class not working(bootpeg) [duplicate]

Answer 1

You don't need to put that extra space in between selector. space in selector looks for descendant elements:

$(".textgray.showing").html("some text");

Answer 2

The space means the second part is inside the first one (it's called the descendant combinator). Remove it:

$(".textgray.showing").html("some text");