在javascript正则表达式中将字符串替换为括号

Question

我试着这个

str = "@a@b";
str2 = str.replace(/@/g,'-[' + str + ']');

输出应该是 - [a] - [b]

Answer 1

您可以搜索@而不是搜索@,然后替换该组.

/@([^@]+)/g
 @           look for this character literately
  (     )    group, this is the part used for replacing -> $1 in replacement string
   [^@]+     look for one or more not @ characters
          g  global flag, replace all found matches

替换是由第一组完成的$1.

var str = "@a@b",
    str2 = str.replace(/@([^@]+)/g,'-[$1]');

console.log(str2);