md/js/replace.js

/*
 * @Description: 替换对象的key值
 * @Autor: kindring
 * @Date: 2021-12-20 14:17:42
 * @LastEditors: kindring
 * @LastEditTime: 2021-12-20 14:32:21
 * @LastDescript: 
 */
let testdata = {
    a: '5s5',
    b: 345
}
let json = JSON.stringify(testdata);
console.log(json);
let keyReg = new RegExp(`\"a\"\:\"|\d`)
let c2 = json.replace(keyReg, `"${'ffff'}":`)
console.log(c2);