The RegExp [^0-9] Expression in JavaScript is used to search any digit which is not between the brackets. The character inside the brackets can be a single digit or a span of digits.
Syntax:
/[^0-9]/
or
new RegExp("[^0-9]")
Syntax with modifiers:
/[^0-9]/g
or
new RegExp("[^0-9]", "g")
Example 1: This example searches the digits which are not present between [0-4] in the whole string.
<!DOCTYPE html> < html > < head > < title > JavaScript RegExp [^0-9] Expression </ title > </ head > < body style = "text-align:center" > < h1 style = "color:green" > GeeksforGeeks </ h1 > < h2 >RegExp [^0-9] Expression</ h2 > < p >Input String: 1234567890</ p > < button onclick = "geek()" > Click it! </ button > < p id = "app" ></ p > < script > function geek() { var str1 = "123456790"; var regex4 = /[^0-4]/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 digits which are not present between [0-9] in the whole string and replaces the characters with hash(#).
<!DOCTYPE html> < html > < head > < title > JavaScript RegExp [^0-9] Expression </ title > </ head > < body style = "text-align:center" > < h1 style = "color:green" > GeeksforGeeks </ h1 > < h2 >RegExp [^0-9] Expression</ h2 > < p >Input String: 128@$%</ p > < button onclick = "geek()" > Click it! </ button > < p id = "app" ></ p > < script > function geek() { var str1 = "128@$%"; var replacement = "#"; var regex4 = new RegExp("[^0-9]", "g"); var match4 = str1.replace(regex4, replacement); 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 [^0-9] Expression are listed below:
- Google Chrome
- Apple Safari
- Mozilla Firefox
- Opera
- Internet Explorer