Mixin, Hitch, connect in Dojo

Mixin, as described in the name, is generally Mixin (/* obejct */target,/* Source */source) add all the attributes and methods of source to the target object. If the two objects have the same fields, the fields with the same name in source will replace the fields in target. Hitch is a hook, for example, VAR Foo = {bar: function (a, B, c) {console. log (a, B, c) ;}}; var fn = dojo. hitch (Foo, "bar", 1, 2); FN (3); // logs "1, 2, 3" I think it is similar to call and apply, however, sometimes this in call and apply generally refers to the object itself. Sometimes another object needs to be referenced, rather than its own attributes and methods. In this case, hitch is used, I think the outer edge of hitch is bigger than call and apply. Haha, I don't know if I understand it. Connect is equivalent to proxy and connects the two functions.