多行字符串
// Multiline strings
`In JavaScript template strings can run
over multiple lines, but double and single
quoted strings cannot.`
// 如打印或者输出,是多行的结构
字符串值的插入
// String interpolation
var name = 'Bob', time = 'today';
`Hello ${name}, how are you ${time}?`
// console: "Hello Bob, how are you today?"