<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script type="text/javascript">
var a = ['a', 'b', 'c'];
var b=['e', 'f', 'g'];
a = a.concat(b);
console.log(a);
</script>
</head>
<body>
</body>
</html>
效果：
