js basis of experience

　　Recent studies have ideas jQuery source code, access to a meal themselves felt weak foundation. Hands just have a js elevation, depth js decided based on experience and record to blog Park. To be overcome in one fell swoop jQuery, VUE and other source.

　　

　　1, variables, scopes and memory problems

 

　　2, reference types

 

　　3, an object-oriented programming

 

　　4, function expression