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Ilya Kantor 2019-08-30 23:04:43 +03:00
parent 95597b8fda
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1-js/02-first-steps/04-variables/article.md
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@ -12,7 +12,7 @@ A [variable](https://en.wikipedia.org/wiki/Variable_(computer_science)) is a "na
To create a variable in JavaScript, use the `let` keyword. To create a variable in JavaScript, use the `let` keyword.
The statement below creates (in other words: *declares* or *defines*) a variable with the name "message": The statement below creates (in other words: *declares*) a variable with the name "message":
```js ```js
let message; let message;

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1-js/02-first-steps/06-type-conversions/1-primitive-conversions-questions/solution.md
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@ -23,4 +23,4 @@ undefined + 1 = NaN // (6)
4. The subtraction always converts to numbers, so it makes `" -9 "` a number `-9` (ignoring spaces around it). 4. The subtraction always converts to numbers, so it makes `" -9 "` a number `-9` (ignoring spaces around it).
5. `null` becomes `0` after the numeric conversion. 5. `null` becomes `0` after the numeric conversion.
6. `undefined` becomes `NaN` after the numeric conversion. 6. `undefined` becomes `NaN` after the numeric conversion.
7. Space characters, such as `\t` and `\n`, are trimmed off string start and end when a string is converted to a number. So a string `\t \n`, similarly to an empty string, becomes `0`. 7. Space characters, are trimmed off string start and end when a string is converted to a number. Here the whole string consists of space characters, such as `\t`, `\n` and a "regular" space between them. So, similarly to an empty string, it becomes `0`.