the hackers tutorial: What is jQuery Confilt Error and How to Resolve it?

jQuery is very important from the sense of websites / blogs be'coz without jQuery we can make our blog unique and also not give the special effects like sliding, dropdown effect etc and many other important things but as you know that we can't install the jQuery 2 times in one single website and when we do this, our effects OR some widgets don't work OR many things which is very important for us they also don't work and in this situation we can't hide last jQuery and not also add the new jQuery. Many times it happens that when we are installing a JavaScript code and that code might not work and you get a error. So, here we are trying to say just about What is this and How can you resolve it?