replace - Replacing Text Inside of Curley Braces JavaScript -

I am trying to use javascript to dynamically replace content inside curly braces. Here is an example of my code:

  var myString = "This is {name} {type} {type} in {Java}} Yes, a {type}!"; Var changed alarre = ['name', 'adjective', 'type']; Var replacewith = ['John', 'simple', 'string']; (MyString.replace (/ \ {replaceArray [i] \} / gi, replacewith [i]);} Alert (MyString) (Var i = 0; i & lt; = replaceArray.length - 1; i ++) );   
 The above code, should, output "This is a simple string of javascript in javascript! Yes, a string!".  
 Here's what:  
 
 We are given a string which needs value in the braces  
 Using a loop "replacement array" to find all the values ​​in curly braces Goes to  
   
 However, I have no luck, especially since  One value can be changed in many places , and that I am working as a dynamic value within regular expressions.  
 
  
   
 
 First of all,  String.replace  is not destructive - it does not change the string itself, therefore You have to set  myString = myString.replace (...) . Second, you can dynamically create  RegExp  objects  new RegExp , so the result of all will be:  
  var myString = "This Replace [array], replacement array = ['name', 'adjective', 'type'], replace = ['john', ' Simple ',' string ']; (Var i = 0; i & lt; replaceArray.length; i ++) {myString = myString.replace (new RegExp ('{' + replaceArray [i] + '}', 'gi'), replacement [i] ); }