javascript - Is throwing errors in constructors also prone to memory leaks? -


throwing exception in constructor can lead memory leaks: source 1, source 2. true oo languages c++, c#, java. wondering if javascript susceptible same memory-leak issue?

to illustrate, have js code:

widget = function(){     console.log("widget constructor"); };  foo = function(){     console.log("foo constructor");     this.w = new widget();     throw new error(); };  foo.prototype.dispose = function() {     delete this.w; };  var f = new foo; f.dispose();

obviously i'll dispose() never called, in case curious fate of f.w object? remain in memory , cannot cleared in way (causing memory leaks)? or perhaps garbage collector smart enough , recognizes not referenced anywhere , disposes it? how handled different js engines? if true how avoid it?


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