Velocity vs. jquery $ Three resolution when conflict occurs

There are several workarounds for Velocity's $ vs. jquery $ conflict:
1. Use jquery instead of $.
such as: Jquery.ajax ();
Cons: Not suitable for expansion, once replaced with a third-party library, it is troublesome

2, use Jquery.noconflict.
such as: var j = jquery.noconflict (); J.ajax ();
Cons: When using jquery's related plugins, it will invalidate the plugin.

3. The conflict method in wrap jquery.
If $.ajax () conflicts in velocity, it is redefined as follows:
function DW () {}
Dw.ajax=function (s) {
Jquery.ajax (s);
}
Dw.ajax ();

Scenario 3 basically solves the disadvantage of 1, 2 ~ ~ ~ It is recommended to use the third method.