通过JS深度判断两个对象字段相同

代码:

function isObject(obj){
return Object.prototype.toString.call(obj)==='[object Object]';
};

function isArray(arr){
return Object.prototype.toString.call(arr)==='[object Array]';
};

function equalsObj(oldData,newData){
// 类型为基本类型时,如果相同,则返回true
if(oldData===newData)return true;
if(isObject(oldData)&&isObject(newData)&&Object.keys(oldData).length === Object.keys(newData).length){
// 类型为对象并且元素个数相同
// 遍历所有对象中所有属性,判断元素是否相同
for (const key in oldData) {
if (oldData.hasOwnProperty(key)) {
if(!equalsObj(oldData[key],newData[key]))
// 对象中具有不相同属性 返回false
return false;
}
}
}else if(isArray(oldData)&&isArray(oldData)&&oldData.length===newData.length){
// 类型为数组并且数组长度相同
for (let i = 0,length=oldData.length; i 

测试:



var oldArr = [1,2,
[
{
name:"张三",
age:11,
}
],
{
name:'李四',
age:21,
em:[
{
address:'邯郸',
phone:'123'
},
{
address:'北京',
phone:234
}
]
}
];
var newArr = [1,2,
[
{
name:"张三",
age:11
}
],
{
name:'李四',
age:21,
em:[
{
address:'邯郸',
phone:'123'
},
{
address:'北京',
phone:234
}
]
}
];
console.log(equalsObj(oldArr,newArr));

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