Regex for Scientific Notation

javascript

const regex = /^-?\d+(?:\.\d+)?[eE][+-]?\d+$/;
const isValid = regex.test(value);

python

import re
pattern = r'^-?\d+(?:\.\d+)?[eE][+-]?\d+$'
if re.match(pattern, value):
    print("valid")

ruby

pattern = /^-?\d+(?:\.\d+)?[eE][+-]?\d+$/
if value =~ pattern
  puts "valid"
end

php

if (preg_match('/^-?\d+(?:\.\d+)?[eE][+-]?\d+$/', $value)) {
    echo "valid";
}

java

String pattern = "^-?\\d+(?:\\.\\d+)?[eE][+-]?\\d+$";
boolean isValid = value.matches(pattern);