RegExp \xhh Metacharacter
A global search for the hexadecimal number 57 (W) in a string:
let text = "Visit W3Schools. Hello World!";
let pattern = /\x57/g;
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Description
The \xhh metacharacters matches Latin characters specified by a hexadecimal number (dd).
Syntax
new RegExp("\\xhh")
or simply:
/\xhh/
Syntax with modifiers
new RegExp("\\xhh", "g")
or simply:
/\xhh/g
Regular Expression Search Methods
In JavaScript, a regular expression text search, can be done with different methods.
With a pattern as a regular expression, these are the most common methods:
String Methods
| match(pattern) | An Array of results |
| matchAll(pattern) | An Iterator of results |
| replace(pattern, rep) | A new String |
| search(pattern) | Index of the first match |
| split(pattern) | An Array of results |
RegExp Methods
| pattern.exec() | An Iterator of results |
| pattern.test() | true or false |
Browser Support
/\xhh/ is an ECMAScript1 (JavaScript 1997) feature.
It is supported in all browsers:
| Chrome | Edge | Firefox | Safari | Opera | IE |
| Yes | Yes | Yes | Yes | Yes | Yes |
