rest參數(shù)形式為(...變量名)
用于獲取函數(shù)的多余參數(shù)妆偏，這樣就不需要是函數(shù)的arguments對(duì)象了。rest參數(shù)搭配的變量是一個(gè)數(shù)組刻诊，該變量將多余的參數(shù)放入數(shù)組中讹挎。
廢話不多說(shuō)上代碼
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