Object.entries() vs Object.assign()
Object.entries() and Object.assign() are both JavaScript Object APIs, and choosing between them is a common point of confusion. This page compares their syntax, parameters, return values, and typical use cases so you can pick the right one. Object.entries(): Returns an array of key/value pairs. Its syntax is Object.entries(obj). Object.assign(): Copies properties from source objects to a target. Its syntax is Object.assign(target, ...sources). Example of Object.entries(): Object.entries({a:1, b:2}) // [["a",1],["b",2]]. Example of Object.assign(): Object.assign({a:1}, {b:2}) // {a:1, b:2}. Read the full references for Object.entries() and Object.assign() to see edge cases, time complexity, browser support, and the mistakes developers most often make with each. Other Object APIs worth comparing: Object.keys(), Object.values(), Object.create(), Object.defineProperty(), Object.defineProperties(), Object.freeze(). Both belong to the Object category in the JS Reference documentation, which covers 29 entries in total. Try both in the JavaScript playground to see the behavioral difference live.