mirror of
https://github.com/whoisclebs/lodash.git
synced 2026-02-07 18:07:49 +00:00
78 lines
2.5 KiB
JavaScript
78 lines
2.5 KiB
JavaScript
/**
|
|
* lodash 4.0.0 (Custom Build) <https://lodash.com/>
|
|
* Build: `lodash modularize exports="npm" -o ./`
|
|
* Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
|
|
* Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
|
|
* Copyright 2009-2016 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
|
|
* Available under MIT license <https://lodash.com/license>
|
|
*/
|
|
var toString = require('lodash.tostring');
|
|
|
|
/** Used to match HTML entities and HTML characters. */
|
|
var reUnescapedHtml = /[&<>"'`]/g,
|
|
reHasUnescapedHtml = RegExp(reUnescapedHtml.source);
|
|
|
|
/** Used to map characters to HTML entities. */
|
|
var htmlEscapes = {
|
|
'&': '&',
|
|
'<': '<',
|
|
'>': '>',
|
|
'"': '"',
|
|
"'": ''',
|
|
'`': '`'
|
|
};
|
|
|
|
/**
|
|
* Used by `_.escape` to convert characters to HTML entities.
|
|
*
|
|
* @private
|
|
* @param {string} chr The matched character to escape.
|
|
* @returns {string} Returns the escaped character.
|
|
*/
|
|
function escapeHtmlChar(chr) {
|
|
return htmlEscapes[chr];
|
|
}
|
|
|
|
/**
|
|
* Converts the characters "&", "<", ">", '"', "'", and "\`" in `string` to
|
|
* their corresponding HTML entities.
|
|
*
|
|
* **Note:** No other characters are escaped. To escape additional
|
|
* characters use a third-party library like [_he_](https://mths.be/he).
|
|
*
|
|
* Though the ">" character is escaped for symmetry, characters like
|
|
* ">" and "/" don't need escaping in HTML and have no special meaning
|
|
* unless they're part of a tag or unquoted attribute value. See
|
|
* [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)
|
|
* (under "semi-related fun fact") for more details.
|
|
*
|
|
* Backticks are escaped because in IE < 9, they can break out of
|
|
* attribute values or HTML comments. See [#59](https://html5sec.org/#59),
|
|
* [#102](https://html5sec.org/#102), [#108](https://html5sec.org/#108), and
|
|
* [#133](https://html5sec.org/#133) of the
|
|
* [HTML5 Security Cheatsheet](https://html5sec.org/) for more details.
|
|
*
|
|
* When working with HTML you should always
|
|
* [quote attribute values](http://wonko.com/post/html-escaping) to reduce
|
|
* XSS vectors.
|
|
*
|
|
* @static
|
|
* @since 0.1.0
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to escape.
|
|
* @returns {string} Returns the escaped string.
|
|
* @example
|
|
*
|
|
* _.escape('fred, barney, & pebbles');
|
|
* // => 'fred, barney, & pebbles'
|
|
*/
|
|
function escape(string) {
|
|
string = toString(string);
|
|
return (string && reHasUnescapedHtml.test(string))
|
|
? string.replace(reUnescapedHtml, escapeHtmlChar)
|
|
: string;
|
|
}
|
|
|
|
module.exports = escape;
|