javascript and webworker

Question

Why can't a javascript file in a WebWorker access document object, when a normal external javascript file can access the document object? Or can a WebWorker access a document object? Because in w3schools it is given that since webworkers are external javascript files, they cannot access the document object, window object, parent object.

Usually, w3schools is not a reliable source. You'd better use the Mozilla Developer Network instead. — Rob W
– Rob W, Commented Feb 23, 2012 at 10:34
WebWorker have access to the BOM. But for keeping them non-concurrent with the main script, which has access to the DOM, you canno't access the DOM. But why should someone even want to do this? — ˈvɔlə
– ˈvɔlə, Commented Jul 30, 2014 at 9:19

robertc · Accepted Answer · 2012-02-23 12:16:54Z

4

It can't access the DOM because then browsers would have to add lots of complexity to ensure their DOM code was thread safe.

answered Feb 23, 2012 at 12:16

robertc

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