en.javascript.info/10-regular-expressions-javascript/08-regexp-greedy-and-lazy/3-find-html-comments/solution.md
Ilya Kantor 62c507c78f ok
2017-03-19 20:40:47 +03:00

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Markdown

We need to find the beginning of the comment `match:<!--`, then everything till the end of `match:-->`.
The first idea could be `pattern:<!--.*?-->` -- the lazy quantifier makes the dot stop right before `match:-->`.
But a dot in Javascript means "any symbol except the newline". So multiline comments won't be found.
We can use `pattern:[\s\S]` instead of the dot to match "anything":
```js run
let reg = /<!--[\s\S]*?-->/g;
let str = `... <!-- My -- comment
test --> .. <!----> ..
`;
alert( str.match(reg) ); // '<!-- My -- comment \n test -->', '<!---->'
```