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function test(){ return (+{}+[])[1]; //返回a }
It’s like the above js code. What I want to know is why the return value is "a"?
"a"
闭关修行中......
+{}=NaN,NaN+[]="NaN","NaN"[1]=a
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
+{}=NaN,NaN+[]="NaN","NaN"[1]=a