Question

// If given "George", "Washington" as arguments, it should return "Washington, George"
function formatName(firstName, lastName) {
  return [lastName, firstName];
}

请参阅链接。我无法弄清楚如何在名字和姓氏之间加上一个简单的空格。我已经在这几个小时请帮助！

Answer 1

使用字符串连接

return lastName +', '+ firstName;

＆＃13;

function formatName(firstName, lastName) {
  return lastName +', '+ firstName;
}

console.log(formatName("George","Washington"))

＆＃13;

如果你的任务真的要处理给定的数组而不是使用带有所需分隔符的Array.prototype.join() method 参数', '

＆＃13;

function formatName(firstName, lastName) {
  return [lastName, firstName].join(', ');
}

console.log(formatName("George","Washington"))

＆＃13;

Answer 2

您应该返回一个连接名字和姓氏的字符串。试试这个：

return lastName +", "+ firstName;

Answer 3

尝试使用join(', ')

function formatName(firstName, lastName) {
  return [lastName, firstName].join(', ');
}

在javascript中添加空格？

3 个答案: