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Merge pull request #1787 from KuthumiPepple/patch-1

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fix typo
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Ilya Kantor 2020-03-21 09:15:12 +03:00 • committed by GitHub
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9-regular-expressions/02-regexp-character-classes/article.md
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@ -1,6 +1,6 @@
# Character classes # Character classes
Consider a practical task -- we have a phone number like `"+7(903)-123-45-67"`, and we need to turn it into pure numbers: `79035419441`. Consider a practical task -- we have a phone number like `"+7(903)-123-45-67"`, and we need to turn it into pure numbers: `79031234567`.
To do so, we can find and remove anything that's not a number. Character classes can help with that. To do so, we can find and remove anything that's not a number. Character classes can help with that.
@ -30,7 +30,7 @@ let regexp = /\d/g;
alert( str.match(regexp) ); // array of matches: 7,9,0,3,1,2,3,4,5,6,7 alert( str.match(regexp) ); // array of matches: 7,9,0,3,1,2,3,4,5,6,7
// let's make the digits-only phone number of them: // let's make the digits-only phone number of them:
alert( str.match(regexp).join('') ); // 79035419441 alert( str.match(regexp).join('') ); // 79031234567
``` ```
That was a character class for digits. There are other character classes as well. That was a character class for digits. There are other character classes as well.