本文由原作者OrkhanJafarov授权翻译。今天，我们就来学习如何在元素的第一个元素上添加一个元素。1.Array.unshift()letfruits=["Apple","Banana","Mango"];fruits.unshift("Orange");console.log(fruits);//Prints["Orange","Apple","Banana","Mango"]fruits.unshift("Guava","Papaya");console.log(fruits);//Prints["Guava","Papaya","Orange","Apple","Banana","Mango"]2.使用展开运算符(...)varfruits=["Apple","Banana","Mango"];varmoreFruits=["Orange",...fruits];console.log(moreFruits);//Prints["Orange","Apple","Banana","Mango"]varsomeoMoreFruits=["Guava","Papaya",...moreFruits];console.log(someoMoreFruits);//Prints["Guava","Papaya","Orange","Apple","Banana","Mango"]console.log(fruits);//Prints["Apple","Banana","Mango"]3.使用Array.concat()我们也可以在开头使用concat()方法连接两个（或更多）数组["Guava","Papaya"];varallFruits=someoMoreFruits.concat(moreFruits,fruits);console.log(allFruits);//Prints["Guava","Papaya","Orange","Apple","Banana"》,"Mango"]完~我是小智，我去洗碗了，下次见~作者：OrkhanJafarov译者：前端小智来源：dev-to-add-element-at-beggining-of-javascript数组/
