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JavaScript

var baseToString = require('../internal/baseToString'),
unescapeHtmlChar = require('../internal/unescapeHtmlChar');
/** Used to match HTML entities and HTML characters. */
var reEscapedHtml = /&(?:amp|lt|gt|quot|#39|#96);/g,
reHasEscapedHtml = RegExp(reEscapedHtml.source);
/**
* The inverse of `_.escape`; this method converts the HTML entities
* `&`, `<`, `>`, `"`, `'`, and ``` in `string` to their
* corresponding characters.
*
* **Note:** No other HTML entities are unescaped. To unescape additional HTML
* entities use a third-party library like [_he_](https://mths.be/he).
*
* @static
* @memberOf _
* @category String
* @param {string} [string=''] The string to unescape.
* @returns {string} Returns the unescaped string.
* @example
*
* _.unescape('fred, barney, & pebbles');
* // => 'fred, barney, & pebbles'
*/
function unescape(string) {
string = baseToString(string);
return (string && reHasEscapedHtml.test(string))
? string.replace(reEscapedHtml, unescapeHtmlChar)
: string;
}
module.exports = unescape;