比较2个Java脚本对象以找出差异

Question

我对java脚本有一定的了解，我正在尝试比较两个java脚本对象，以找出它们之间的区别。下面是我在函数中使用的代码，没有得到所需的输出。

function compoare() {
  var Json1 = [
    { name: "ABC", value: "5" },
    { name: "DEF", value: "85712264" },
  ];
  var Json2 = [
    { name: "DEF", value: "85712264" },
    { name: "ABC", value: "3" },
  ];

  var obj1Keys = Object.keys(Json1);
  var obj1Values = Object.values(Json1);
  var obj2Keys = Object.keys(Json2);
  var obj2Values = Object.values(Json2);
  console.log(obj1Keys);
  console.log(obj1Values);

  for (let i = 0; i < obj1Keys.length; i++) {
    for (let j = 0; j < obj2Keys.length; j++) {
      if (obj1Keys[i] === obj2Keys[j]) {
        if (obj1Values[i] !== obj2Values[j]) {
          console.log(obj1Keys[i]);
          console.log(obj1Values[i]);
        }
      }
    }
  }
}

我想比较一下Json1中的'name‘和'value’，并签入Json2。如果找到匹配的“名称”，则将“值”与相应的“名称”进行比较。如果“值”有差异，则从Json1中打印“name”和“value”对。

预期O/P为: ABC，5

提前谢谢！！

Answer 1

您可以使用.forEach()方法来比较这两个对象的属性和值，下面是如何实现这一点的方法，还可以注意我在第一个循环中使用的对象析构函数赋值

​

var Json1 = [
  { name: "ABC", value: "5" },
  { name: "DEF", value: "85712264" },
];
var Json2 = [
  { name: "DEF", value: "85712264" },
  { name: "ABC", value: "3" },
];

var obj1Keys = Object.keys(Json1);
var obj1Values = Object.values(Json1);
var obj2Keys = Object.keys(Json2);
var obj2Values = Object.values(Json2);

Json1.forEach(({name, value}) => {
   Json2.forEach((elem) => {
    if( name === elem.name && value !== elem.value) {
      console.log(name, value);
    }
  })
});

​

Answer 2

这是工作吗？

var Json1 = [{ "name": "ABC", "value": "5" }, { "name": "DEF", "value": "85712264" }];
    var Json2 = [{ "name": "DEF", "value": "85712264" }, { "name": "ABC", "value": "3" }];

    for (let i = 0; i < Json1.length; i++) {
      const { name, value } = Json1[i];
      for (let j = 0; j < Json2.length; j++) {
        const json2 = Json2[j];
        if (name === json2.name ) {
          console.log(name, value);
        }
      }
    }

Answer 3

这方面可能略有变化，具体如下：

var Json1 = [  
{ name: "ABC", value: "5" },
  { name: "DEF", value: "85712264" },
];
var Json2 = [
  { name: "DEF", value: "85712264" },
  { name: "ABC", value: "3" },
];
var map = new Map();
Object.keys(Json1).forEach(k => map.set(Json1[k].name, Json1[k].value));
Object.keys(Json2).forEach(k => {
    if(map.has(Json2[k].name) && map.get(Json2[k].name) !== Json2[k].value)
        console.log(Json2[k].name, map.get(Json2[k].name));
});