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I really don't see why this isn't a syntax error What is actually being done with the calls after the chain of +'s? Edit: Something to do with semicolons bein

• afandian 12y ago
  This is valid JS: 1; 2; alert("returns undefined"); confirm("return true or false?") (function() {return 3})(); (function() {})(); What's being done with the values of 1, 2, undefined, true/false, 3 and undefined? Nothing if they're not assigned. But as every function returns a value and invocations are therefore an expression, it would be impossible to disallow expressions to be evaluated but not assigned.
• d4n3 12y ago
  Javascript has "semicolon insertion". It tries to parse a newline with no semicolon as continuing the current expression, if it can't, it inserts a semicolon. It's a 'feature' that's caused too many bugs and is a warning in most linters.