escaping

Having a single-quoted string: $content = '\tThis variable is not set by me.\nCannot do anything about it.\n'; I would like to inerpret/process the string as if it was double-quoted . In other words I would like to replace all the possible escape characters (not just tab and linefeed as in this example) with the real values, taking into account that backslash might be escaped as well, thus '\\n' needs to be replaced by '\n'. eval() would easily do what I need but I cannot use it. Is there some simple solution? (A similar thread that I found deals with expansion of variables in the single

I need to make a replace of a plus sign in a javascript string. there might be multiple occurrence of the plus sign so I did this up until now: myString= myString.replace(/+/g, "");# This is however breaking up my javascript and causing glitches. How do you escape a '+' sign in a regular expression? myString = myString.replace(/\+/g, ""); You need to escape the + as its a meta char as follows: myString= myString.replace(/\+/g, ""); Once escaped, + will be treated literally and not as a meta char. I prefer this: myString.replace(/[+]/g, ''). you should escape your + sign, \+ myString.replace(/\

I'm trying to map out how the Play framework supports escaping. This is a nice page spelling out the needed functionality: https://www.owasp.org/index.php/XSS_%28Cross_Site_Scripting%29_Prevention_Cheat_Sheet So I'm trying to relate that to Play template features and fully understand what Play does and doesn't do. HTML escaping: ${} or the escape() function Attribute escaping: I can't find a built-in solution JavaScript escaping: there's an escapeJavaScript() http://www.playframework.org/documentation/1.2/javaextensions CSS escaping: I can't find a built-in solution URL escaping: nothing

In Java, \' denotes a single quotation mark (single quote) character, and \" denotes a double quotation mark (double quote) character. So, String s = "I\'m a human."; works well. However, String s = "I'm a human." does not make any compile errors, either. Likewise, char c = '\"'; works, but char c = '"'; also works. In Java, which is better to use? In HTML or CSS, things like style="font-family:'Arial Unicode MS';" are more often (and for such tags, I think it's the only way to use quotation marks), but in Java, I usually saw people use escape characters like "I\'m a human." You don't need to

I have the following line of code in a JSP File in my web app that is giving an error: <jsp:setProperty name="db" property="userName" value="<%=request.getParameter("userName")%>"/> The error message that I get is: org.apache.jasper.JasperException: /loginbean.jsp(6,59) Attribute value request.getParameter("userName") is quoted with " which must be escaped when used within the value What I read on some sites is that characters like ' (single quote) or " (double quote) need to be prefixed with an escape sequence \ (backslash) if they are to be used. However, when I try and prefix the double

I have a user-input text displayed on one of the pages. I want to allow new lines, though. How do I display the text, so it is escaped AND allows new lines ? I used nl2br() and Blade's tripple brackets {{{$text}}} , however, obviously, the tripple brackets escape <br/> tags as well. Is there a way to combine escaping and HTML's new lines using Blade? Thanks. You can do the escaping first, using e() and then apply nl2br() : {{ nl2br(e($text)) }} e() is the function Blade uses when compiling triple brackets You can use this {!! nl2br(e($text)) !!} 来源： https://stackoverflow.com/questions/28027236