function bytesToSize(bytes) {
var sizes = [‘Bytes’, ‘KB’, ‘MB’, ‘GB’, ‘TB’];
if (bytes == 0) return ‘0 Byte’;
var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)));
return Math.round(bytes / Math.pow(1024, i), 2) + ‘ ‘ + sizes[i];
}
注意: 这是原始代码,请在下面使用固定版本。 Aliceljm 不再激活她复制的代码
现在,未缩小固定版本,并且ES6版本:( 按社区)
function formatBytes(bytes, decimals = 2) { if (bytes === 0) return '0 Bytes'; const k = 1024; const dm = decimals < 0 ? 0 : decimals; const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']; const i = Math.floor(Math.log(bytes) / Math.log(k)); return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];}**现在,固定版本:
function formatBytes(a,b=2){if(0===a)return"0 Bytes";const c=0>b?0:b,d=Math.floor(Math.log(a)/Math.log(1024));return parseFloat((a/Math.pow(1024,d)).toFixed(c))+" "+["Bytes","KB","MB","GB","TB","PB","EB","ZB","YB"][d]}用法:
// formatBytes(bytes,decimals)formatBytes(1024); // 1 KBformatBytes('1024'); // 1 KBformatBytes(1234); // 1.21 KBformatBytes(1234, 3); // 1.205 KB演示/来源:
function formatBytes(bytes, decimals = 2) { if (bytes === 0) return '0 Bytes'; const k = 1024; const dm = decimals < 0 ? 0 : decimals; const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']; const i = Math.floor(Math.log(bytes) / Math.log(k)); return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];}// ** Demo pre **var p = document.querySelector('p'), input = document.querySelector('input');function setText(v){ p.innerHTML = formatBytes(v);}// bind 'input' eventinput.addEventListener('input', function(){ setText( this.value )})// set initial textsetText(input.value);<input type="text" value="1000"><p></p>PS:更改k = 1000
或sizes = ["..."]
根据需要( 位 或 字节 )



