The JavaScript string match() method matches the string against a regular expression. This method returns an array with the matches and null if no match is found.
string.match(match)
str.match(regexp)
JavaScript string match
A simple example code search for “red” using a string with a regular expression and other examples do a global search.
<!DOCTYPE html>
<html>
<body>
<script>
let text = "Mr. Red has a red house";
let res = text.match("red");
console.log(res)
// Using a regular expression
let out = text.match(/red/);
console.log(out)
// Global seach
let g = text.match(/red/g);
console.log(g)
// case-insensitive search
let all = text.match(/red/gi);
console.log(all)
</script>
</body>
</html>Output:
- If the
regexpuses thegflag, thenmatch()method returns an array containing all the matches. The result does not include the capturing groups. - If the
regexpdoesn’t use thegflag, thematch()method will return the first match and its related capturing groups.
Using the JavaScript Regex match() method with the named capturing group
let str = 'I like yellow color palette!';
let re = /(?<color>yellow) color/;
let result = str.match(re);
console.log(result);Do comment if you have any doubts or suggestions on this JS string method tutorial.
Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.
OS: Windows 10
Code: HTML 5 Version