13.3.10 unshift方法.html

javascript即用即差核心对象手册

<script>
   var arr=new Array();
   //单个数据写入数组
   for (var i=1;i<=4;i++)
   {
	  arr.unshift(i);
   }
   document.write("<br>");
   //批量写入数组
   arr.unshift("a",3.14,"hello");
   var newarr=new Array(1,2,3,4,5);
   //写入新数组
   arr.unshift(newarr);
   document.write("全部数据如下:<br>");
   document.write(arr.join(","));
</script>