Create a simple java script embedded in the Google chrome to open certain websites with pre-defined shortcuts.
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install the extension of ShortKeys, which can define certain shortcuts to run a java script. Alternatively, you can directly import the content in the shortkeys.txt file.
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customize keyboard shortcuts in ShortKeys, and add certain key to run a javascript. Here I put a simple javascript to open youtube. You can copy and paste this function, and bind it with a key combination "ctrl+u", so that whenever you type these keys, your browser will automatically open the youtube.