//普通字串
`In JavaScript '\n' is a line-feed.`;
 `Hello ${'World'}`; // "Hello World"

//字串中嵌入變數
let name = "Bob", time = "today";
console.log(`Hello ${name}, how are you ${time}?`); //  Hello Bob, how are you today?

//字串中嵌入 JavaScript 表示式
`${x} + ${y} = ${x + y}`;// "1 + 2 = 3"
`${x} + ${y * 2} = ${x + y * 2}`;//
 
 "1 + 4 = 5"

let obj = {x: 1, y: 2};
`${obj.x + obj.y}`;// "3"

// 字串中嵌入函式
function fn(){
    return "hello world"
}
`foo ${fn()} bar`;// "foo hello world bar"

// 字串中嵌入物件
`${obj}`;// "[object Object]"

// 字串中嵌入未宣告的變數
 `Hello, ${place}`;// ReferenceError: place is not defined