Fix js coding standards

Issue information

From user: erik seifert

Related to !14 (merged)

Contribution record

Fork management

Problem/Motivation

There are a lot of eslint messages.

Steps to reproduce

../../core/node_modules/.bin/eslint --resolve-plugins-relative-to=../../core --fix  ./js

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes

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