For first time users, JavaScript can be a pretty confusing language to use on your web pages. But once you get the hang of it, it might prove to be a good and easy scripting language to work with. 

JavaScript was designed to have a similar look to Java but was made easier even for non-programmers to use. It is largely used in websites especially to enable scripting access to objects that have been embedded in other applications.

Just like any other scripting languages, JavaScript also relies on syntax wrong coding would necessarily result in errors that would not make the script function as it should.

A lot of people who use JavaScript sometimes commit such errors that may have them wonder why their scripts would not work. Here are some of the common JavaScript errors that a number of JavaScript users, beginners and experts alike, usually commit.

Spelling Errors

JavaScript users usually commit a number of spelling errors in scripting. It is too bad that the spell checker of the word processor installed in PC's are helpless in helping you in this aspect.

In order to check for spelling errors, it is necessary for you to go though the coding line by line. This might be a time consuming task but it might be necessary in order to detect certain spelling errors.

Capitalization is an oftentimes common error in JavaScript coding. JavaScript is case sensitive. VariableError is not the same as variableError. In order to avoid the problem of referring to wrong variables due to capitalization, users should adopt a standard approach to naming them.

This can be done by either capitalizing the first letter of the second and the succeeding words or by using underscores as a separator for the words. This will allow users to avoid creating two variables with names that differ only in capitalization.

Use of Reserved Words

Many JavaScript users also sometimes make the mistake of using reserved words for variable or function names. Words such as "else", "function", "if", 'return", and 'do" can't be used on variable and function names because they are part of the language syntax. Using them may either cause errors or create unpredictable results on the webpage.

It is better to take note of these reserved words and avoid using the in variables as well as function names when you do your scripting. This will help you avoid doing lengthy debugging problems later on.

Failure to Close Everything

In JavaScript coding, it is important to close everything that has been opened. A lot of JavaScript users tend to commit this error simply out of simple forgetfulness or through oversight.

The use of curly braces enclose blocks of function and IF statements but aren't usually used for creating single line statements. When you use an open curly brace, make sure that you follow it up with a closing curly brace.

Make sure that you keep track of it as you go because it can be pretty confusing to check out especially if you have layers upon layers of statements already made before you decide on keeping track.