While many users may associate strict mode with the code 'use strict'; or "use strict";, the question arises as to why strict mode is not activated with an expression like use strict; instead.
While many users may associate strict mode with the code 'use strict'; or "use strict";, the question arises as to why strict mode is not activated with an expression like use strict; instead.
In the case that a JavaScript engine did not support strict mode, the use strict; directive would result in an error being thrown.
Opting for a string approach ensures compatibility with older versions.
In my opinion, the solution is quite straightforward. In the realm of ECMAScript, also known as JavaScript, standardization has yet to be achieved. This is why the choice of using strings is crucial. The consensus among all browsers is that 'use strict' is more favorable than simply use strict. This decision is also made to prevent errors on older browsers that do not support strict mode.
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