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reg->regexp

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This commit is contained in:
Ilya Kantor 2019-09-06 16:50:41 +03:00
parent 4232a53219
commit 32e20fc97c
35 changed files with 132 additions and 132 deletions
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8
9-regular-expressions/14-regexp-lookahead-lookbehind/1-find-non-negative-integers/solution.md
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@ -6,11 +6,11 @@ We can exclude negatives by prepending it with the negative lookahead: `pattern:
Although, if we try it now, we may notice one more "extra" result:
```js run
let reg = /(?<!-)\d+/g;
let regexp = /(?<!-)\d+/g;
let str = "0 12 -5 123 -18";
console.log( str.match(reg) ); // 0, 12, 123, *!*8*/!*
console.log( str.match(regexp) ); // 0, 12, 123, *!*8*/!*
```
As you can see, it matches `match:8`, from `subject:-18`. To exclude it, we need to ensure that the regexp starts matching a number not from the middle of another (non-matching) number.
@ -20,9 +20,9 @@ We can do it by specifying another negative lookbehind: `pattern:(?<!-)(?<!\d)\d
We can also join them into a single lookbehind here:
```js run
let reg = /(?<![-\d])\d+/g;
let regexp = /(?<![-\d])\d+/g;
let str = "0 12 -5 123 -18";
alert( str.match(reg) ); // 0, 12, 123
alert( str.match(regexp) ); // 0, 12, 123
```

4
9-regular-expressions/14-regexp-lookahead-lookbehind/1-find-non-negative-integers/task.md
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@ -6,9 +6,9 @@ Create a regexp that looks for only non-negative ones (zero is allowed).
An example of use:
```js
let reg = /your regexp/g;
let regexp = /your regexp/g;
let str = "0 12 -5 123 -18";
alert( str.match(reg) ); // 0, 12, 123
alert( str.match(regexp) ); // 0, 12, 123
```

4
9-regular-expressions/14-regexp-lookahead-lookbehind/2-insert-after-head/task.md
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@ -7,7 +7,7 @@
Например:
```js
let reg = /ваше регулярное выражение/;
let regexp = /ваше регулярное выражение/;
let str = `
<html>
@ -17,7 +17,7 @@ let str = `
</html>
`;
str = str.replace(reg, `<h1>Hello</h1>`);
str = str.replace(regexp, `<h1>Hello</h1>`);
```
После этого значение `str`:

8
9-regular-expressions/14-regexp-lookahead-lookbehind/article.md
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@ -96,18 +96,18 @@ In the example below the currency sign `pattern:(€|kr)` is captured, along wit
```js run
let str = "1 turkey costs 30€";
let reg = /\d+(?=(€|kr))/; // extra parentheses around €|kr
let regexp = /\d+(?=(€|kr))/; // extra parentheses around €|kr
alert( str.match(reg) ); // 30, €
alert( str.match(regexp) ); // 30, €
```
And here's the same for lookbehind:
```js run
let str = "1 turkey costs $30";
let reg = /(?<=(\$|£))\d+/;
let regexp = /(?<=(\$|£))\d+/;
alert( str.match(reg) ); // 30, $
alert( str.match(regexp) ); // 30, $
```
## Summary