使用JavaScript在另一個字符串的多個位置插入字符串

Question

我有2個變量，需要將b插入到evry「}」之後，並且需要任何css類。我怎樣才能做到這一點與jQuery或JavaScript？

var a  = "p{font-size:20px} 
       .tihais {font-weight:bold}"; 
var b  = "#afnay"; 
var position = after evry "}"; 

THX

Answer 1

var a  = "p{font-size:20px} 
      .tihais {font-weight:bold}"; 
var b  = "}#afnay"; // This variable value is changed! 
a= a.replace("}", b); 

Answer 2

var a = 'p{font-size:20px}\n'+ 
 
'.tihais {font-weight:bold}'; 
 
var b = "}#afnay";  
 
a= a.replace(/}/g, b); 
 
console.log(a)