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大数据相加

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<!DOCTYPE html><html lang="en"><head>    <meta charset="UTF-8">    <title>大数据相加</title></head><body><h3 style="margin-left:800px;margin-top: 200px;">我是大数据相加</h3></body></html>

js:

‘use strict‘;import Base from ‘./base.js‘;var fs = require(‘fs‘);export default class extends Base {    /**     * index action     * @return {Promise} []     */    async indexAction() {//        let rootPath = think.ROOT_PATH + "\\www\\";        let num1 = await fs.readFileSync(rootPath + "3.txt");  //同步版的 fs.readFile()  fs.readFileSync(filename, [encoding]) filename-->文件路径        let num2 = await fs.readFileSync(rootPath + "4.txt");        let sum = mySum(num1, num2);        //写入文件        fs.writeFile(rootPath + "sum.txt", sum, ‘utf8‘, (err)=> {            if (err) throw err;            console.log(‘计算结果保存成功!‘);        });        return this.display();    }}/** * 求和方法 * @param num1 * @param num2 * @returns {string} */function mySum(num1, num2) {    let sum = ‘‘;    let jin = 0;    for (let i = num1.length - 1; i >= 0; i--) {        let stmp = (num1[i] + num2[i] - 96);        if(i==0){            sum = (stmp + jin) + sum;        }  else{            sum = ((stmp + jin) % 10 ) + sum;        }        jin = parseInt(stmp / 10);    }    return sum;}

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大数据相加