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Merge pull request #3004 from OmerBaddour/master

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minor fixes
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Ilya Kantor 2022-06-18 22:35:35 +03:00 • committed by GitHub
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6
1-js/05-data-types/02-number/article.md
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@ -4,7 +4,7 @@ In modern JavaScript, there are two types of numbers:
1. Regular numbers in JavaScript are stored in 64-bit format [IEEE-754](https://en.wikipedia.org/wiki/IEEE_754-2008_revision), also known as "double precision floating point numbers". These are numbers that we're using most of the time, and we'll talk about them in this chapter. 1. Regular numbers in JavaScript are stored in 64-bit format [IEEE-754](https://en.wikipedia.org/wiki/IEEE_754-2008_revision), also known as "double precision floating point numbers". These are numbers that we're using most of the time, and we'll talk about them in this chapter.
2. BigInt numbers, to represent integers of arbitrary length. They are sometimes needed, because a regular number can't safely exceed <code>2<sup>53</sup></code> or be less than <code>-2<sup>53</sup></code>. As bigints are used in few special areas, we devote them a special chapter <info:bigint>. 2. BigInt numbers represent integers of arbitrary length. They are sometimes needed because a regular number can't safely exceed <code>2<sup>53</sup></code> or be less than <code>-2<sup>53</sup></code>. As bigints are used in few special areas, we devote them a special chapter <info:bigint>.
So here we'll talk about regular numbers. Let's expand our knowledge of them. So here we'll talk about regular numbers. Let's expand our knowledge of them.
@ -308,7 +308,7 @@ They belong to the type `number`, but are not "normal" numbers, so there are spe
alert( isNaN("str") ); // true alert( isNaN("str") ); // true
``` ```
But do we need this function? Can't we just use the comparison `=== NaN`? Sorry, but the answer is no. The value `NaN` is unique in that it does not equal anything, including itself: But do we need this function? Can't we just use the comparison `=== NaN`? Unfortunately not. The value `NaN` is unique in that it does not equal anything, including itself:
```js run ```js run
alert( NaN === NaN ); // false alert( NaN === NaN ); // false
@ -402,7 +402,7 @@ A few examples:
alert( Math.random() ); // ... (any random numbers) alert( Math.random() ); // ... (any random numbers)
``` ```
`Math.max(a, b, c...)` / `Math.min(a, b, c...)` `Math.max(a, b, c...)` and `Math.min(a, b, c...)`
: Returns the greatest/smallest from the arbitrary number of arguments. : Returns the greatest/smallest from the arbitrary number of arguments.
```js run ```js run

4
1-js/05-data-types/04-array/article.md
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@ -96,7 +96,7 @@ The "trailing comma" style makes it easier to insert/remove items, because all l
[recent browser="new"] [recent browser="new"]
Let's say we want a last element of the array. Let's say we want the last element of the array.
Some programming languages allow to use negative indexes for the same purpose, like `fruits[-1]`. Some programming languages allow to use negative indexes for the same purpose, like `fruits[-1]`.
@ -403,7 +403,7 @@ It's rarely used, because square brackets `[]` are shorter. Also, there's a tric
If `new Array` is called with a single argument which is a number, then it creates an array *without items, but with the given length*. If `new Array` is called with a single argument which is a number, then it creates an array *without items, but with the given length*.
Let's see how one can shoot themself in the foot: Let's see how one can shoot themselves in the foot:
```js run ```js run
let arr = new Array(2); // will it create an array of [2] ? let arr = new Array(2); // will it create an array of [2] ?