js格式化显示文件大小（bytes 转 KB）

Posted 2021-01-14 电子猫

 1 //格式化文件大小
 2 function renderSize(value){
 3     if(null==value||value==‘‘){
 4         return "0 Bytes";
 5     }
 6     var unitArr = new Array("Bytes","KB","MB","GB","TB","PB","EB","ZB","YB");
 7     var index=0;
 8     var srcsize = parseFloat(value);
 9     index=Math.floor(Math.log(srcsize)/Math.log(1024));
10     var size =srcsize/Math.pow(1024,index);
11     size=size.toFixed(2);//保留的小数位数
12     return size+unitArr[index];
13 }