For the first one, you just need to go through the input string and replace each character which needs escaping by a proper escape sequence. JavaScript also uses backslash as an escape character. \? End the script block to get into an HTML context. Escapes or unescapes a JavaScript string removing traces of offending characters that could prevent interpretation. The sequences \\, \' and \" are used to escape the character that follows the backslash. The solution to avoid this problem, is to use the backslash escape character.. Escaping Double and Single Quotes. If you are lucky, nothing is done about the first backslash. While you are at it, try different numbers of backslashes, just in case. JSON is based on a subset of the JavaScript Programming Language, therefore, JSON also uses backslash as the escape character: A string is a sequence of zero or more Unicode characters, wrapped in double quotes, using backslash escapes. The following characters are reserved in JavaScript and must be properly escaped to be used in strings: Horizontal Tab is replaced with \t; Vertical Tab is replaced with \v The resulting helper looks like this: The syntax of \' will always be a single quote, and the syntax of \" will always be a double quote, without any fear of breaking the string. While similar to non-escape sequences, where the leading backslash is simply ignored (i.e. I think this can only be done by getting an unescaped ' in there. For the second one, you need to return an IHtmlString to tell Razor that the string is already properly escaped and doesn’t require additional escaping. It does not show backslash in the console but it does in the return value. JavaScript String Escape / Unescape. Hi, I am trying to escape backslash using regular expression in javascript. For example, to echo a PHP variable into JavaScript code: Switch to a general JavaScript context. This is because Javascript strings are UTF-16, which actually sees these as two characters ("".length === 2). Character codes, code points, and code units. Is the back slash escaped or do I need to try any other way. Using the Escape Character (\) We can use the backslash (\) escape character to prevent JavaScript from interpreting a quote as the end of the string. Is it possible to escape backslash using regular expression because "replace function " does not seem to make a difference in output. Another essential PHP function that comes in handy when passing data to JavaScript is addslashes which will add a backslash before: backslashes, single- and double-quotes. A code point (also known as “character code”) is a numerical representation of a specific Unicode character. for ? [^1] A character can be: The escape() function encodes a string. If an escape option is false, then the corresponding escape sequence will be treated like any other backslash before a non-escape character. The string will be chopped to "We are the so-called ". See this link please: link. The String#replaceAll() interprets the argument as a regular expression.The \ is an escape character in both String and regex.You need to double-escape it for regex: string.replaceAll("\\", "\\\\"); But you don’t necessarily need regex for this, simply because you want an exact character-by-character replacement and you don’t need patterns here. Having recently written about character references in HTML and escape sequences in CSS, I figured it would be interesting to look into JavaScript character escapes as well. The escape() function was deprecated in JavaScript version 1.5. Possible to escape backslash using regular expression in JavaScript version 1.5 PHP variable into JavaScript javascript escape backslash JavaScript! Corresponding escape sequence will be treated like any other way to `` We are the so-called `` use (... 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