计算器 <!DOCTYPE html > < html > < head > < meta charset =" UTF-8 " > < meta http-equiv =" X-UA-Compatible " content =" IE=edge " > < meta name =" viewport " content =" width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no " > < title > Scalc.js </ title > < script src =" dist/scalc.min.js " > </ script > < link href =" dist/scalc.min.css " rel =" stylesheet "