In Javascript, {} + [] = 0 is true. Why?

I really don"t understand the operation principle of JS. I would like to ask my brother to explain a wave

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{}+[] ===0   true
[]+{} ===0   false
Javascript html5 react.js html
Apr.05,2021
{} is a code block, so execute + [] . Because [] is an object, toPrimitive- > valueOf- > toString is ', resulting in +'= 0

https://www.zhihu.com/questio.

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MySQL Error : Disk full (/tmp/#sql-temptable-64f5-47b5fb5-cbfa.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-47b5fb5-cbfa.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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