is there proceed "hot swap" javascript formula within browser?


is there any apparatus enables "hot swap" javascript essence while executing webpage?



i am looking something identical hotspot does java, proceed "hot deploy" new js formula but carrying reload whole page.



is there anything out there?



clarifying box don't know "hot swap", indicated lock:



by "hot swap" i meant permitting me change tools formula contained page itself the .js files.



then horizon detect change - presumably automagically denote finish - reload formula dynamically, avoiding new server-side post (reload).



that kind proceed foster debugging blunder fixing, given don't need reload page start communication over again, scratch.



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