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43 lines
1.4 KiB
43 lines
1.4 KiB
var escapeHtmlChar = require('./_escapeHtmlChar'), |
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toString = require('./toString'); |
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/** Used to match HTML entities and HTML characters. */ |
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var reUnescapedHtml = /[&<>"']/g, |
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reHasUnescapedHtml = RegExp(reUnescapedHtml.source); |
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/** |
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* Converts the characters "&", "<", ">", '"', and "'" in `string` to their |
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* corresponding HTML entities. |
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* |
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* **Note:** No other characters are escaped. To escape additional |
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* characters use a third-party library like [_he_](https://mths.be/he). |
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* |
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* Though the ">" character is escaped for symmetry, characters like |
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* ">" and "/" don't need escaping in HTML and have no special meaning |
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* unless they're part of a tag or unquoted attribute value. See |
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* [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands) |
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* (under "semi-related fun fact") for more details. |
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* |
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* When working with HTML you should always |
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* [quote attribute values](http://wonko.com/post/html-escaping) to reduce |
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* XSS vectors. |
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* |
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* @static |
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* @since 0.1.0 |
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* @memberOf _ |
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* @category String |
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* @param {string} [string=''] The string to escape. |
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* @returns {string} Returns the escaped string. |
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* @example |
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* |
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* _.escape('fred, barney, & pebbles'); |
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* // => 'fred, barney, & pebbles' |
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*/ |
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function escape(string) { |
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string = toString(string); |
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return (string && reHasUnescapedHtml.test(string)) |
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? string.replace(reUnescapedHtml, escapeHtmlChar) |
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: string; |
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} |
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module.exports = escape;
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