What does hydrogen bonds do to ionic bonds?

From the Wikipedia article: Hydrogen Bond, "A hydrogen bond is the attractive interaction of a hydrogen atom with an electronegative atom, such as nitrogen, oxygen or fluorine, that comes from...

Covalent and ionic bonds all have a shared pair of electrons and hydrogen has a pair of unshared electrons.

both are formed due to some opposite charges on the elements

No, hydrogen bonds are weak in comparison to both ionic and covalent bonds.

Ionic bonds are far stronger than hydrogen bonds. Ice is held together by hydrogen bonds, and table salt, which is sodium chloride (NaCl), is held together by ionic bonds. You can hammer on ice and...