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.
hough 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 (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,
#102, #108, and #133 of the HTML5 Security Cheatsheet for more details.
When working with HTML you should always quote attribute values to reduce XSS vectors.