JavaScript Reserved Keywords

Reserved keywords as of ECMAScript 2015

Please select a keyword to learn about the syntax and run an example.

• break
• case
• catch
• class
• const
• continue
• debugger
• default
• delete
• do
• else
• export
• extends
• finally
• for
• function
• if
• import
• in
• instanceof
• new
• return
• super
• switch
• this
• throw
• try
• typeof
• var
• void
• while
• with
• yield

Source: Mozilla, https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Lexical_grammar#keywords
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