Sometimes, when a browser can't identify a tag, it assumes that the tag is actually text to be displayed. A property value is not set or changed. But because this isn't the same property you wanted to adjust, the result will be different than you expected. This is most common with functions because JavaScript must be able to find the function code whenever it encounters a function call. Depending on what word you get wrong, you could end up with anything from a scoop of sorbet to a boiled shoe.
Case is important, and capitalization is critical.
In most cases, the second word is capitalized while the first word is not. In addition, Chapters 5 through 17 show the proper capitalization for JavaScript functions, objects, and properties. As with socks in the laundry, improperly matched pairs will result in a statement of problematic fashion. It is vital that every open bracket and parenthesis have an appropriate closing mate somewhere further down in the code. People most often lose track when they are nesting parentheses or brackets, such as when they are using a loop statement within a loop statement.