1 function change(limit){
2 var size = ""
;
3 if(limit < 0.1 * 1024){
//小于0.1KB，则转化成B
4 size = limit.toFixed(2) + "B"
5 }
else if(limit < 0.1 * 1024 * 1024){
//小于0.1MB，则转化成KB
6 size = (limit/1024).toFixed(2) + "KB"
7 }
else if(limit < 0.1 * 1024 * 1024 * 1024){
//小于0.1GB，则转化成MB
8 size = (limit/(1024 * 1024)).toFixed(2) + "MB"
9 }
else{
//其他转化成GB
10 size = (limit/(1024 * 1024 * 1024)).toFixed(2) + "GB"
11 }
12
13 var sizeStr = size + "";
//转成字符串
14 var index = sizeStr.indexOf(".");
//获取小数点处的索引
15 var dou = sizeStr.substr(index + 1 ,2)
//获取小数点后两位的值
16 if(dou == "00"){
//判断后两位是否为00，如果是则删除00
17 return sizeStr.substring(0, index) + sizeStr.substr(index + 3, 2
)
18 }
19 return size;
20 }
21
22 var newLimit = change(1048576
);
23 console.log(newLimit);
转载于:https://www.cnblogs.com/chengkun101/p/7856966.html
