justjavac/es2018puzzlers

第三题为何不相同？

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#2 opened on Mar 20, 2018

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Description

const obj = {
  x:1,
  y:2,
  a:1,
  b:2,
  c:3
}

测试：

fn1(obj) 和 fn2(obj) log一样的数据， 求解

Contributor guide

Research direction
Examine the definitions of fn1 and fn2 in the repository to understand how they iterate over object properties. Check the ECMAScript 2018 specification for property enumeration order and note how Object.keys, for...in, or other methods differ.
Tech stack
javascript
Domain
web dev
Issue type
Research
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65