javascript - Putting regular expressions in strings -

I write dynamically using a javascript file A (written in node.js) to create a javascript file b I am trying to A from .js file b. I want to use regular expression in javascript file. For this, I have to put the regex function for A in the string in A. However, whenever I use it, backslash (escape character) translates the file A as a string, rather than immediately translating the regex function

  Var mongodata = "some strings with squares and curly brackets}} {}}},]},} {} {{}}, {[[], [,] [,"; Mongodata = 'var mongodata =' + mongodata + '; \ NFunction SetData () {mongodata = mongodata.replace (/ \ [/ g, ""). Replace (/ \) \}, / g, "& lt; / td> "). Replace (/ \] \} / g, "& lt; / td> & lt; / tr & gt;"); Document.getElementById ("Mongodeta"). InnerHTML = mongoata;} ';   
 This is the purpose of the string  mongodata  to be used as the dynamically created  .js  file content.  
 I think the word of this question can be a little misleading. Please tell me whether further explanation is required.   
 
 
 In your string, such as  \ N  character, all other backslassed expressions Evaluating, so you have to protect yourself from backslash. In other words, a RegExp type that produces a RegExp is the correct way to avoid backslash itself;  \\\ , but you may need to avoid other characters to prevent their evaluation.