JS通用数组去重（数组对象）

// 判断是否为对象
const isObject = (val) => val !== null && typeof val === 'object';
function equals(val1,val2){
    if(isObject(val1) && isObject(val2)){
        const keys1 = Object.keys(val1),keys2 = Object.keys(val2)
        if(keys1.length !== keys2.length){
            return false;
        }
        // 遍历对象的key
        for(const k of keys1){
            if(!keys2.includes(k)){
                return false
            }
            if(!equals(val1[k],val2[k])){
                return false;
            }
        }
        return true;
    }else{
        return val1 === val2;
    }
}
const arr = [
    {a:1,b:2},
    {b:2,a:1},
    {a:1,b:2,c:{a:1,b:2}},
    {b:2,a:1,c:{b:2,a:1}},
]
const newArr = [...arr];
for (let i = 0; i < newArr.length; i++) {
  for (let j = i+1; j < newArr.length; j++) {
    if (equals(newArr[i],newArr[j]) && i !== j) {
      newArr.splice(j, 1);
      j--;
    }
  }
}
console.log(newArr);//[ { a: 1, b: 2 }, { a: 1, b: 2, c: { a: 1, b: 2 } } ]

记录一下工作中比较有用的东西！