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> The lowdown: you can copy and paste just about any website directly into your JavaScript code without modification and it won't break anything. The following
by honie 5y ago
> The lowdown: you can copy and paste just about any website directly into your JavaScript code without modification and it won't break anything.
The following doesn't seem to be valid though. :( Am I missing something?
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/label
let a = 1;
- maxbond 5y ago``` >> https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/label https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe... 10 <- 10 ``` Eg, this is equivalent to: ``` >> https: 10 ```
- lhorie 5y agoSort of the same reason why `if (true) let a = 1` is a syntax error (and the error message says why: "Lexical declaration cannot appear in a single-statement context") The rationale here is that the variable goes out of scope right away due to the implicit block, so they made it a syntax error so that you don't waste time pulling your hair out debugging issues downstream from this line without realizing this scope-related obscurity. (This also has potential security implications e.g. if you think you're shadowing a variable from a parent scope but you're not)