# match method in JavaScript regular expressions

The `match` method finds the first match with a regular expression. It returns an array, the zero element of which will contain the found substring.

Let's look at an example. Let's say we have the following string:

`let str = 'xax xaax xaaax';`

Let's apply our method with a regular expression to this string:

`let res = str.match(/xa+x/);`

The zero element of the resulting array will contain the first match with the regex:

`console.log(res[0]); // shows 'xax'`

In this case, the result will have additional properties. The `index` property will contain the position at which the match was found:

`console.log(res.index); // shows 4`

And in the `input` property - the string on which the search was applied (information of doubtful value):

`console.log(res.input); // shows 'xax xaax xaaax'`

Given a string:

`let str = 'aaa 123 bbb';`

Find a substring containing digits.

Given a string:

`let str = 'aaa 123 bbb';`

Find a position of the first digit.

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