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Sloppy Mode

ECMAScript 5 and later let scripts opt in to a new strict mode , which alters the semantics of JavaScript in several ways to improve its resiliency and which make it easier to understand what's going on when there are problems.

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Sloppy mode

The normal, non-strict mode of JavaScript is sometimes referred to as sloppy mode . This isn't an official designation, but you are likely to come across it if you spend time doing serious JavaScript code.

See also

  • "Strict Mode " in chapter 7 ("JavaScript Syntax") in the book Speaking JavaScript .

Updated on April 20, 2024 by Datarist.