Javascript function as parameter - Browser compatibility -

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i know the ability pass function names parameters handled modern browsers, i'm wondering older browsers compatibility:

  1. what first version of javascript/ecmascript supported it? supported since first days of javascript? (that surprise me)
  2. what versions of each of major browsers (google chrome, firefox, ie, safari, opera, etc.) first supported it?

as far i'm aware, functions have been objects, , objects have been passable arguments.


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