核心提示：!DOCTYPE htmlhtmlheadmeta charset=UTF-8title/titlescript type=text/var a=[10,20,30];var b=[40,50,60]...
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script type="text/javascript">
var a=[10,20,30];
var b=[40,50,60];
var c=a.concat(b);
var d=b.concat(a);
console.log(c) ; //输出结果为[10,20,30,40,50,60]
console.log(d) ; //输出结果为[40,50,60,10,20,30]
//数组元素之间的连接符号,可以随便写
console.log(a.join('*')) ; //输出结果为10*20*30
console.log(a.join('-')) ; //输出结果为10-20-30
console.log(a.join('- -p')) ; //输出结果为10- -p20- -p30
</script>
</head>
<body>
</body>
</html>
