postman js 正则表达式取单引号双引号中间的字符串

例如字符串为'helloworld你好',想要获取到的内容是helloworld你好

var str = 'helloworld你好';
re = /\'(.*?)\'/;
str_new = str.replace(re,"$1");
console.log(str_new);

运行后结果如下:
postman js 正则表达式取单引号双引号中间的字符串