Js优化+技巧
1、String转化为Number
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
+'45' //number
2、Number转化为String
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
' ' +4 //string
3、float转Int
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
~~3.14159
// => 3
~~5.678
// => 5
4、颜色随机色
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
('00000'+(0|Math.random()*(1<<24)).toString(16)).slice(-6)
5、数组排序
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
[1,9,8,10].sort((a, b) => a - b) //[1, 8, 9, 10]