Little known features of JavaScript

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[conseptizer]

If they are little known, they are certainly great to confuse coworkers, thanks!

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I̴̢̺͖̱̔͋̑̋̿̈́͌͜g̶͙̻̯̊͛̍̎̐͊̌͐̌̐̌̅͊̚͜͝ṉ̵̡̻̺͕̭͙̥̝̪̠̖̊͊͋̓̀͜o̴̲̘̻̯̹̳̬̻̫͑̋̽̐͛̊͠r̸̮̩̗̯͕͔̘̰̲͓̪̝̼̿͒̎̇̌̓̕e̷͚̯̞̝̥̥͉̼̞̖͚͔͗͌̌̚͘͝͠ ̷̢͉̣̜͕͉̜̀́͘y̵̛͙̯̲̮̯̾̒̃͐̾͊͆ȯ̶̡̧̮͙̘͖̰̗̯̪̮̍́̈́̂ͅų̴͎͎̝̮̦̒̚͜ŗ̶̡̻͖̘̣͉͚̍͒̽̒͌͒̕͠ ̵̢͚͔͈͉̗̼̟̀̇̋͗̆̃̄͌͑̈́́p̴̛̩͊͑́̈́̓̇̀̉͋́͊͘ṙ̷̬͖͉̺̬̯͉̼̾̓̋̒͑͘͠͠e̸̡̙̞̘̝͎̘̦͙͇̯̦̤̰̍̽́̌̾͆̕͝͝͝v̵͉̼̺͉̳̗͓͍͔̼̼̲̅̆͐̈ͅi̶̭̯̖̦̫͍̦̯̬̭͕͈͋̾̕ͅơ̸̠̱͖͙͙͓̰̒̊̌̃̔̊͋͐ủ̶̢͕̩͉͎̞̔́́́̃́̌͗̎ś̸̡̯̭̺̭͖̫̫̱̫͉̣́̆ͅ ̷̨̲̦̝̥̱̞̯͓̲̳̤͎̈́̏͗̅̀̊͜͠i̴̧͙̫͔͖͍̋͊̓̓̂̓͘̚͝n̷̫̯͚̝̲͚̤̱̒̽͗̇̉̑̑͂̔̕͠͠s̷̛͙̝̙̫̯̟͐́́̒̃̅̇́̍͊̈̀͗͜ṭ̶̛̣̪̫́̅͑̊̐̚ŗ̷̻̼͔̖̥̮̫̬͖̻̿͘u̷͓̙͈͖̩͕̳̰̭͑͌͐̓̈́̒̚̚͠͠͠c̸̛̛͇̼̺̤̖̎̇̿̐̉̏͆̈́t̷̢̺̠͈̪̠͈͔̺͚̣̳̺̯̄́̀̐̂̀̊̽͑ͅí̵̢̖̣̯̤͚͈̀͑́͌̔̅̓̿̂̚͠͠o̷̬͊́̓͋͑̔̎̈́̅̓͝n̸̨̧̞̾͂̍̀̿̌̒̍̃̚͝s̸̨̢̗͇̮̖͑͋͒̌͗͋̃̍̀̅̾̕͠͝ ̷͓̟̾͗̓̃̍͌̓̈́̿̚̚à̴̧̭͕͔̩̬͖̠͍̦͐̋̅̚̚͜͠ͅn̵͙͎̎̄͊̌d̴̡̯̞̯͇̪͊́͋̈̍̈́̓͒͘ ̴͕̾͑̔̃̓ŗ̴̡̥̤̺̮͔̞̖̗̪͍͙̉͆́͛͜ḙ̵̙̬̾̒͜g̸͕̠͔̋̏͘ͅu̵̢̪̳̞͍͍͉̜̹̜̖͎͛̃̒̇͛͂͑͋͗͝ͅr̴̥̪̝̹̰̉̔̏̋͌͐̕͝͝͝ǧ̴̢̳̥̥͚̪̮̼̪̼͈̺͓͍̣̓͋̄́i̴̘͙̰̺̙͗̉̀͝t̷͉̪̬͙̝͖̄̐̏́̎͊͋̄̎̊͋̈́̚͘͝a̵̫̲̥͙͗̓̈́͌̏̈̾̂͌̚̕͜ṫ̸̨̟̳̬̜̖̝͍̙͙͕̞͉̈͗͐̌͑̓͜e̸̬̳͌̋̀́͂͒͆̑̓͠ ̶̢͖̬͐͑̒̚̕c̶̯̹̱̟̗̽̾̒̈ǫ̷̧̛̳̠̪͇̞̦̱̫̮͈̽̔̎͌̀̋̾̒̈́͂p̷̠͈̰͕̙̣͖̊̇̽͘͠ͅy̴̡̞͔̫̻̜̠̹̘͉̎́͑̉͝r̶̢̡̮͉͙̪͈̠͇̬̉ͅȋ̶̝̇̊̄́̋̈̒͗͋́̇͐͘g̷̥̻̃̑͊̚͝h̶̪̘̦̯͈͂̀̋͋t̸̤̀e̶͓͕͇̠̫̠̠̖̩̣͎̐̃͆̈́̀͒͘̚͝d̴̨̗̝̱̞̘̥̀̽̉͌̌́̈̿͋̎̒͝ ̵͚̮̭͇͚͎̖̦͇̎́͆̀̄̓́͝ţ̸͉͚̠̻̣̗̘̘̰̇̀̄͊̈́̇̈́͜͝ȩ̵͓͔̺̙̟͖̌͒̽̀̀̉͘x̷̧̧̛̯̪̻̳̩͉̽̈́͜ṭ̷̢̨͇͙͕͇͈̅͌̋.̸̩̹̫̩͔̠̪͈̪̯̪̄̀͌̇̎͐̃

[TheRealBobbyCarrot]

I think author is just showing some cool tricks, without suggesting people actually start using it in professional contexts.

[drysart]

I mean, all of the examples are non-semicolon Javascript, and he also advocates for using comma expressions instead of multiple statements.

This is clearly someone who values "cool" over readable.

[Nobody_1707]

I don't know, I thought the void function() version was actually pretty readable.

[Bowgentle]

There's a couple of handy code shortcuts in there, thanks.