Below are the advatages of using jQery over JavaScript
a>.Jquery is well written optimised javascript code so
it will be faster in execution unless we write same standard optimised javascript code.
b>.Jquery is concise java script code ,means minimal ammount of code
is to be written for the same functionality than the javascript.
c>.Javascript related Development is fast using Jquery because most of the
functionality is already written in the library and we just need to use that.
d>.Jquery has cross browser support ,so we save time for supporting all the browsers.