利用toString()的进制转换，可生成随机验证码
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Description
`
Math.random().toString(36).substring(3,7) //生成四位数的随机验证码
`
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
The issue mentions only a JavaScript snippet using Math.random(), toString(36), and substring(3,7); no repository file or test is identified. First inspect the repository structure and existing JavaScript examples to determine where this content belongs. Done means the intended location and contribution scope are confirmed, with the four-character verification-code example documented if appropriate.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript
- Domain
- documentation
- Issue type
- Documentation
- Difficulty
- 1/5
- Estimated time
- Under an hour
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100