javascript函数影响具有许多元素的类，而不会影响特定类

I'am trying to develop a function to affect a class which has many elements in it. But I don't want that js function to effect on a specific class which is also an element in that previously mentioned class. The thing is when I run that project as a html document simply on the browser, the code I've got works perfectly fine. But when I convert it to jade and run through node js the console error says a bracket is missing after the argument and it does not work too. I think its supposed to work as it does when I test the code using the html file.The path spesifications and hrefs are all correct. I've tested them. the js code I've gotI'am trying to develop a function to affect a c