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RegExp.prototype.source - JavaScript | MDN
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  5. RegExp
  6. RegExp.prototype.source
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RegExp.prototype.source

Baseline Widely available

This feature is well established and works across many devices and browser versions. Its been available across browsers since 2015 ..

source , .

In this article

: source

js
var regex = /fooBar/gi;

console.log(regex.source); // 'fooBar',     /.../   'ig'.

ECMAScript 5, source . , " (?:)". , ( , "\n").

new RegExp().source; // "(?:)"

new RegExp('\n').source === '\n';  // true,   ES5
new RegExp('\n').source === '\\n'; // true,   ES5

Specification
ECMAScript 2027 LanguageSpecification
# sec-get-regexp.prototype.source

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  2. RegExp
    1. RegExp()
    1. escape()
    1. RegExp.$1-$9
    2. RegExp.input ($_)
    3. RegExp.lastMatch ($&)
    4. lastParen ($+)
    5. leftContext ($`)
    6. rightContext ($')
    7. [Symbol.species]
    1. compile()
    2. RegExp.prototype.exec()
    3. RegExp.prototype.test()
    4. RegExp.prototype.toString()
    5. [Symbol.match]()
    6. [Symbol.matchAll]()
    7. [Symbol.replace]()
    8. RegExp.prototype[@@search]()
    9. RegExp.prototype[@@split]()
    1. RegExp.lastIndex
    2. dotAll
    3. RegExp.prototype.flags
    4. RegExp.prototype.global
    5. hasIndices
    6. RegExp.prototype.ignoreCase
    7. RegExp.prototype.multiline
    8. RegExp.prototype.source
    9. RegExp.prototype.sticky
    10. RegExp.prototype.unicode
    11. unicodeSets
  9. Object/Function
    1. Function.prototype.apply()
    2. Function.prototype.bind()
    3. Function.prototype.call()
    4. Function.prototype.toString()
    5. [Symbol.hasInstance]()
    1. Function.displayName
    2. Function.length
    3. Function.name
    4. prototype
    5. Function.arguments
    6. Function.caller
    1. Object.prototype.__defineGetter__()
    2. Object.prototype.__defineSetter__()
    3. Object.prototype.__lookupGetter__()
    4. Object.prototype.__lookupSetter__()
    5. Object.prototype.hasOwnProperty()
    6. Object.prototype.isPrototypeOf()
    7. Object.prototype.propertyIsEnumerable()
    8. Object.prototype.toLocaleString()
    9. Object.prototype.toString()
    10. Object.prototype.valueOf()
    1. Object.prototype.__proto__
    2. Object.prototype.constructor
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