update npm bootstrap code example

password generator how to make one code example npm lodash deep clone code example what is html semantic elements code example buttons material uii code example how to combine 3 dictionaries in same name in python code example form input styling code example js console log how to show element code example jquery get first td of row code example sort string so that maximum frequency char comes first code example how to see if a variable is in a class in c# code example sqlalchemy query many to many code example typescript string.contains cannot be null code example