先来个初级的
byteChange = byte => {let size = ''if (byte < 0.1 * 1024) { // 小于0.1KB 则转化成Bsize = byte.toFixed(2) + 'B'}else if (byte < 0.1 * 1024 * 1024) { // 小于0.1MB 则转换成KBsize = (byte / 1024).toFixed(2) + 'KB'}else if (byte < 0.1 * 1024 * 1024 * 1024) { // 小于0.1GB 则转换成MBsize = (byte / (1024 * 1024)).toFixed(2) + 'MB'}else if (byte < 0.1 * 1024 * 1024 * 1024 * 1024) { // 小于0.1TB 则转换成GBsize = (byte / (1024 * 1024 * 1024)).toFixed(2) + 'GB'}else if (byte < 0.1 * 1024 * 1024 * 1024 * 1024 * 1024) { // 小于0.1PB 则转换成TBsize = (byte / (1024 * 1024 * 1024 * 1024)).toFixed(2) + 'TB'}else if (byte < 0.1 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024) { // 小于0.1EB 则转换成PBsize = (byte / (1024 * 1024 * 1024 * 1024 * 1024)).toFixed(2) + 'PB'}else if (byte < 0.1 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024) { // 小于0.1ZB 则转换成EBsize = (byte / (1024 * 1024 * 1024 * 1024 * 1024 * 1024)).toFixed(2) + 'EB'}else if (byte < 0.1 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024) { // 小于0.1YB 则转换成ZBsize = (byte / (1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024)).toFixed(2) + 'ZB'}return size}
下面看大神级的
var byteConvert = function(bytes) {if (isNaN(bytes)) {return '';}var symbols = ['bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];var exp = Math.floor(Math.log(bytes)/Math.log(2));if (exp < 1) {exp = 0;}var i = Math.floor(exp / 10);bytes = bytes / Math.pow(2, 10 * i);if (bytes.toString().length > bytes.toFixed(2).toString().length) {bytes = bytes.toFixed(2);}return bytes + ' ' + symbols[i];
};
调用
byteChange(bytes);
byteConvert(bytes);