const passwordChangeable = userInfo.password_changeable === 'y' || userInfo.password_changeable === 'Y' ? this.$t('yes') : userInfo.password_changeable === 'n' || userInfo.password_changeable === 'N' ? this.$t('no') : userInfo.password_changeable 优化这段代码

这段代码可以使用一个更简洁的三元运算符来进行优化，如下所示：

const passwordChangeable = (userInfo.password_changeable === 'y' || userInfo.password_changeable === 'Y') ? this.$t('yes') : (userInfo.password_changeable === 'n' || userInfo.password_changeable === 'N') ? this.$t('no') : userInfo.password_changeable;

也可以使用一个更易读的 if/else 语句来进行优化，如下所示：

let passwordChangeable;
if (userInfo.password_changeable === 'y' || userInfo.password_changeable === 'Y') {
  passwordChangeable = this.$t('yes');
} else if (userInfo.password_changeable === 'n' || userInfo.password_changeable === 'N') {
  passwordChangeable = this.$t('no');
} else {
  passwordChangeable = userInfo.password_changeable;
}