JavaScriptでの4種類のメモリーリークとその対策

4 Types of Memory Leaks in JavaScript and How to Get Rid Of Them
https://auth0.com/blog/2016/01/26/four-types-of-leaks-in-your-javascript-code-and-how-to-get-rid-of-them/


1: Accidental global variables

2: Forgotten timers or callbacks

3: Out of DOM references

4: Closures