javascript - 将字符串中的变量替换为值

Question

我有一个像这样的字符串:

const message = "Are you sure you want to delete the user {username} ?";

我有一个具有用户属性的对象，例如:-

const user = {
  id: 1,
  username: 'ABC',
  age: 34
};

那么如何用实际值替换字符串中的用户名？

Answer 1

这里的方法与目前的方法略有不同:

const placeholderRegex = /\{(\w+?)}/g;

function populateTemplate(string, placeholders) {
  return string.replace(placeholderRegex, (_, name) => placeholders[name]);
}

const message = populateTemplate(
  "Are you sure you want to delete the user {username} ?", 
  user);