JavaScript代碼

Js代碼

1. <script type = "text/javascript">   
2.     var arr = ["HTML","CSS","JavaScript","DOM"];   
3.     var arr2 = ["ASP.NET","PHP","J2EE","Python","Ruby"];   
4.     var arrNew = arr.concat(arr2);   
5.     var arr3 =  ["1","2","3","4"];   
6.     var arrNewNew = arr.concat(arr2,arr3);   
7. </script>  

<script type = "text/javascript">
var arr = ["HTML","CSS","JavaScript","DOM"];
var arr2 = ["ASP.NET","PHP","J2EE","Python","Ruby"];
var arrNew = arr.concat(arr2);
var arr3 =  ["1","2","3","4"];
var arrNewNew = arr.concat(arr2,arr3);
</script>

測試數(shù)組的concat方法

    上面的代碼執(zhí)行完,，arrNew將是arr和arr2兩個(gè)數(shù)組的組合，arrNew的length是兩個(gè)數(shù)組length之和,。

    concat方法也可以接受多個(gè)參數(shù),。例如：var arrNewNew = arr.concat(arr2,arr3); 這個(gè)語句將arr與arr2與arr3一起連接成一個(gè)新的數(shù)組。