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Other identifiers to avoid

Other identifiers to avoid

The object names used in Appendix A aren't officially reserved (outside of the keywords above), but as they are part of the JavaScript language, you shouldn't use them as function or variable names. If you do, abandon all hope; the results will be unpredictable.

In addition, Netscape is case-sensitive, which means that it differentiates between Document and document. In Netscape, the former could in theory be used as a variable, but the latter could not. Internet Explorer is not case-sensitive, which means that it does not understand any difference between Document and document. Consequently, be aware that just because it works in one browser doesn't mean that it'll always work in others.


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