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Console error brings up "undefined is not a function"

BMM Archive · July 15, 2026

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Preserved forum archive. This topic stores the original first post and locally mirrored RPG Maker Web attachments when available. It is posted by the BMMPlay archive account, not by the original creator.

Original Source

Original title: Console error brings up "undefined is not a function"
Original author: Junane
Original date: May 27, 2018
Source thread: https://forums.rpgmakerweb.com/threads/console-error-brings-up-undefined-is-not-a-function.95785/
Source forum path: Game Development Engines > Legacy Engine Support > RPG Maker MV Support

Summary

The following notetag code I'm using to ATTEMPT at counting my Emergency Tactics state is throwing an error to the console saying "undefined is not a function". Notetag: if (a.isStateAfffected(25)){ value = this.isHpEffect();

Archived First Post

The following notetag code I'm using to ATTEMPT at counting my Emergency Tactics state is throwing an error to the console saying "undefined is not a function".

Notetag:
<Post-Damage Eval>
if (a.isStateAfffected(25)){
value = this.isHpEffect();
if (value < 0){
b.gainHp(value * 2);
}
}
</Post-Damage Eval>

Console:
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Plugins:
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Any ideas on this?

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#039 #rpg-maker-archive #mv-support

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