How to troubleshoot syntax errors when using the delete function in Three.js within Eclipse

When using the Javascript Library Three.js, it is important to note that the delete keyword can be used as an object property. While this is valid under ECMAScript 5 standards, Eclipse currently only supports ECMA 3. As stated in the Mozilla reference, reserved words specifically apply to Identifiers rather than properties. Despite attempts to disable JS validation in Eclipse, errors still persist. Is there a method to update ECMA validation or deactivate JS validation altogether? Every approach has been tested with no success.

Further reading: Javascript : Syntax error on token "delete", StringLiteral? The provided answer may be misleading, as the syntax is technically correct.

javascripteclipsethree.js

Answer №1

Full disclosure: I am the creator of tern.java.

For starters, my recommendation is to download and install tern.java, which offers excellent support for Three.js.

To address your validation issue:

  • If you are using Eclipse Mars, it's necessary to remove the JSDT nature by editing your .project file and deleting the line 
    <nature>org.eclipse.wst.jsdt.core.jsNature</nature>
  • In an upcoming version of Eclipse, improvements are being made to Eclipse's JSDT feature with the option to disable it. You can find more information about this at

If you're looking to optimize Validation, consider utilizing JSHint support within tern.java.

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