Question

我正在尝试创建一个简单的JavaScript函数，它将一个字符串作为输入。例如，如果我的＆＃34;放置＆＃34;数组有元素，＆＃34; house＆＃34;，＆＃34; farm＆＃34;，＆＃34; barn＆＃34;，＆＃34; hotel＆＃34;我输入了这个字符串：

Hello, welcome to my $place. I hope you like it here at my $place.

输出将是：

Hello, welcome to my house. I hope you like it here at my house.
Hello, welcome to my farm. I hope you like it here at my farm.
Hello, welcome to my barn. I hope you like it here at my barn.
Hello, welcome to my hotel. I hope you like it here at my hotel.

Answer 1

您可以将元素存储在数组中，然后迭代它，例如使用Array#forEach并使用数组中的指定元素记录每个字符串。

var place = ["house", "farm", "barn", "hotel"];
    place.forEach(v => console.log("Hello, welcome to my " + v + ". I hope you like it here at my " + v + "."));

如果要准确显示用户输入的内容，请使用以下方法。

var place = prompt();

console.log("Hello, welcome to my " + place + ". I hope you like it here at my " + place + ".");

Answer 2

使用一些不错的ES2015功能（块范围变量，模板文字和箭头功能）。

let places = ["house", "farm", "barn", "hotel"];
places.forEach(a=>console.log(`Hello, welcome to my ${a}!`));

或者，一些不错的发电机功能呢？

function* welcome2places(placesArray) {
  let places = placesArray;
  yield* places;
}
let welcome = welcome2places(["house", "farm", "barn", "hotel"]);
let welcomeMessage = welcome.next();
while (!welcomeMessage.done) {
   console.log(`Welcome to my ${welcomeMessage.value}!`);
   welcomeMessage = welcome.next();
}

Answer 3

可以用句子映射每个数组元素，用元素替换所有出现的“$ place”...

console.log(["house","farm"].map(el=>"Hello, welcome to my $place. I hope you like it here at my $place.".split("$place").join(el)).join("\n");

如何使用字符串中的数组元素打印多个句子？

3 个答案: