练习题7：取出数组里面的负数
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Description
给出一个数组，数组里面的成员可是数值，字符串，对象，数组。找出里面所有的字符串
let arr=[-6.236,3,-21,{a:-11,b:{c:-10}},[11,2.26,[-1,-6,]]]
console.log(JSON.stringify(str).split('-').splice(1).map(item=>-Number.parseFloat(item)))
解题思路：首先把数组转成 json ，然后按照 ’-‘ 分割字符，把第一个元素删除，再用 Number.parseFloat 把字符串转成 数值
关键点：Number.parseFloat
Number.parseFloat('12asd31{{}') //12
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Research direction
Start with the JavaScript example in the issue body and clarify whether the exercise should find negative numbers or all strings. Check the JSON.stringify and parseFloat approach against the nested array and object shown, then update the exercise so its requested result, variable names, and completion condition are consistent.
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Assessment
- Tech stack
- javascript
- Domain
- documentation
- Issue type
- Documentation
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100