API in HTML 5 me topic aahe he

Sir aapne jo html 5 me 10th session sikhaya he usme aapke jo 2 topic he 1st- how to drag and drop api.?? Usme to output hi nhi dikhaya aapne to smjh nhi aa rha mera output sahi he yaa nahi
2nd - what is web storage api.? Aur iss topic me aapka local storage api ki coding hi nhi dikhayi to wo smjh me mahi aaya plzz ho ske to jldi usko theek kro