<!DOCTYPE html>charset="utf-8"W3Cschool教程(w3cschool.cn)var myNumber = 128;document.write(myNumber + ' 十进制<br>');document.write(myNumber.toString(16) + ' 十六进制<br>');document.write(myNumber.toString(8) + ' 八进制<br>');document.write(myNumber.toString(2) + ' 二进制<br>');