数组累加 concat

< 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 "

document.write(arr.concat(arr2))

< / script>