Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

r"
"
gmi

Test String

Code Generator

Language

Generated Code

const regex = new RegExp('\\b(?:loan)\\s*(?:balance|amounts?|reimbursements?|installments?)?\\s*(?:of|is|\\s|\\:|\\-)\\s*(?:(?:[\\$]\\s*[\\.,\\d]+\\s*(?:millions?|billions?|thousands?|[KMB])?)|(?:[\\.\\,\\d]+\\s*(?:millions?|billions?|thousands?|[KMB])?\\s*(?:dollars?|\\$)?)|(?:[\\.\\,\\d]+\\s*(?:\\$)))|(?: [\\$]\\s*[\\.,\\d]+\\s*(?:millions?|billions?|thousands?|[KMB])?)|(?:[\\.\\,\\d]+\\s*(?:millions?|billions?|thousands?|[KMB])?\\s*(?:dollars?|\\$ ))|(?:[\\.\\,\\d]+\\s*(?:\\$ ))', 'gmi') const str = `loan balance is \$45,56.89 loan balance of \$ 1M Loan Amount of 43000K loan reimbursement is 54.4 dollars loan reimbursement is 34,10.45 million loan balance of 25000\$ loan amount \$100,200.30 Loan Amount: 100K Loan Amount \$ 1.5 million loan is \$54K loan balance - 50K\$ ---------------------------------------------------------------- 2.9 millions \$25000.50 1,99\$ \$25000 1.10 dollar \$25000 1,99 dollars \$23K \$ 25,00 1.10 dollar \$25,000.50 1,99 dollars \$25000.50 10 dollar \$ 25,000 1.99\$ 1,99\$ \$25000 1.10 dollar \$25000.50 1,99 dollars 10 dollar \$ 25,000 25,000.50\$ 1.99\$ \$25,000.50 1.10 dollar \$25000.50 1,99 dollars \$23K 10 dollar \$25000 1.99\$ \$ 25,000 djkb_09\$kjh87 gh67_(\$67.67P) `; // Reset `lastIndex` if this regex is defined globally // regex.lastIndex = 0; let m; while ((m = regex.exec(str)) !== null) { // This is necessary to avoid infinite loops with zero-width matches if (m.index === regex.lastIndex) { regex.lastIndex++; } // The result can be accessed through the `m`-variable. m.forEach((match, groupIndex) => { console.log(`Found match, group ${groupIndex}: ${match}`); }); }

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions