渡劫的咸鱼哥

摘要： //拼接数组 var arr1 = [1,2,3];var arr2 = [4,5,6];var arr3 = arr1.concat(arr2);console.log(arr3); //[ 1, 2, 3, 4, 5, 6 ]//用分隔符连接数组元素，形成字符串var strArr = ['aa 阅读全文