https://www.npmjs.com/package/deep-equal

  1. function deepEqual(x, y) {
  2.   if (x === y) return true;
  4.   if (typeof x == "object" && x != null && typeof y == "object" && y != null) {
  5.     if (Object.keys(x).length != Object.keys(y).length) return false;
  7.     // 比较对象内部
  8.     for (var prop in x) {
  9.       if (y.hasOwnProperty(prop)) {
  10.         if (!deepEqual(x[prop], y[prop])) return false;
  11.       }
  12.       return false;
  13.     }
  14.     return true;
  15.   }
  16.   return false;
  17. }

isEqual

https://gist.github.com/ryangoree/d077e28ff5aee6643c7d1dbaf39bd3b4

  1. const isEqual = (item1, item2) => {
  3.     // are they different types?
  4.     if (typeof item1 !== typeof item2) {
  5.         return false;
  6.     }
  8.     // if they aren't objects, are their values equal?
  9.     if (typeof item1 !== 'object') {
  10.         return item1 === item2;
  11.     }
  13.     // ok, they're objects; do they have different key lengths?
  14.     if (Object.keys(item1).length !== Object.keys(item2).length) {
  15.         return false;
  16.     }
  18.     for (let prop in item1) {
  19.         if (item1.propertyIsEnumerable(prop)) {
  21.             // are any of the property values unequal?
  22.             if(!isEqual(item1[prop], item2[prop])) {
  23.                 return false;
  24.             };
  25.         }
  26.     }
  28.     // everything must be equal.
  29.     return true;
  30. }