js数组字符串

<script type="text/javascript">
  	
  var arr = new Array(3) ;
 
arr[0] = "Jani";
 
arr[1] = "Hege";
 
arr[2] = "Stale";
 
document.write(arr.join() + "<br />");//默认情况下不提供分隔符，分隔符是“，”号;
 
document.write(arr.join("."));

  	var  arr=[1,2,3];
  	console.log(arr+'');
  	console.log(arr.join());

      //输出 1,2,3 数组就这样变成字符串了，
  </script>



  	var  arr=[1,2,3];
  	
  	console.log(String(arr));