多行字串

一般要在一串字串中插入值會這樣做

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function sayHi(name){
    console.log('Hi!' + name + '!')
}

使用backtick “`”將字串包起來，插入值用’${ value }’包起來

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function sayHi(name){
    console.log(`Hi! ${name}!`)
}

計算與三元判斷

利用字串模板的方式，也可以在模板裡進行計算，或者是做三元判斷

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function sayHi( name, day){
    console.log(`Hi! ${name}!${day*24} hour no see!`)
}

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function sayHi( name, day){
    console.log(`Hi! ${name}!${day<7}?'':'Long time no see'`)
}

透過backtick可以直接建立多行字串

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const letter = `Hi!Nice to meet you
                My name is Ken
                what is your name?`