JS concat()方法--数组拼接

concat() : 用于连接两个或多个数组。该方法不会改变现有的数组，而仅仅会返回被连接数组的一个副本。

语法：

arrayObject.concat(arrayX,arrayX,......,arrayX)

例：

<script type="text/javascript">

var arr = new Array(3)
arr[0] = "George"
arr[1] = "John"
arr[2] = "Thomas"

var arr2 = new Array(3)
arr2[0] = "James"
arr2[1] = "Adrew"
arr2[2] = "Martin"

var arr3 = new Array(2)
arr3[0] = "William"
arr3[1] = "Franklin"

document.write(arr.concat(arr2,arr3))

</script>

//输出结果为： George,John,Thomas,James,Adrew,Martin,William,Franklin