JavaScript | RegExp \W Metacharacter
The RegExp \W Metacharacter in JavaScript is used to find the non word character i.e. characters which are not from a to z, A to Z, 0 to 9. It is same as [^a-zA-Z0-9].
Syntax:
/\W/
or
new RegExp("\\W")
Syntax with modifiers:
/\W/g
or
new RegExp("\\W", "g")
Example 1: This example searches the non words characters.
<!DOCTYPE html> < html > < head > < title > JavaScript RegExp \W Metacharacter </ title > </ head > < body style = "text-align:center" > < h1 style = "color:green" > GeeksforGeeks </ h1 > < h2 >RegExp \W Metacharacter</ h2 > < p > Input String: GeeksforGeeks@_123_$ </ p > < button onclick = "geek()" > Click it! </ button > < p id = "app" ></ p > < script > function geek() { var str1 = "GeeksforGeeks@_123_$"; var regex4 = /\W/g; var match4 = str1.match(regex4); document.getElementById("app").innerHTML = "Found " + match4.length + " matches: " + match4; } </ script > </ body > </ html > |
Output:
Before Clicking the button:
After Clicking the button:
Example 2: This example searches the non-word characters in the whole string.
<!DOCTYPE html> < html > < head > < title > JavaScript RegExp \W Metacharacter </ title > </ head > < body style = "text-align:center" > < h1 style = "color:green" > GeeksforGeeks </ h1 > < h2 >RegExp \W Metacharacter</ h2 > < p >Input String: Geeky@128</ p > < button onclick = "geek()" > Click it! </ button > < p id = "app" ></ p > < script > function geek() { var str1 = "Geeky@128"; var regex4 = new RegExp("\\W", "g"); var match4 = str1.match(regex4); document.getElementById("app").innerHTML = "Found " + match4.length + " matches: " + match4; } </ script > </ body > </ html > |
Output:
Before Clicking the button:
After Clicking the button:
Supported Browsers: The browsers supported by RegExp \W Metacharacter are listed below:
- Google Chrome
- Apple Safari
- Mozilla Firefox
- Opera
- Internet Explorer