JavaScript is Case Sensitive
A function named "myfunction" is not the same as "myFunction". Therefore watch your capitalization when
you create or call variables, objects and functions.
Symbols
Open symbols, like ( { [ " ', must have a matching closing symbols, like ' " ] } ).
White Space
JavaScript ignores extra spaces. You can add white space to your script to make it more readable. These
two lines means exactly the same:
name="Hege"
name = "Hege"
Break up a Code line
You can break up a code line with the backslash. The example below will be displayed properly:
document.write \
("Hello World!")
You can insert special characters (like " ' ; &) with the backslash:
document.write ("You \& I sing \"Happy Birthday\".")
The example above will produce this output:
You & I sing "Happy Birthday".
Comments
You can add a comment to your JavaScript code starting the comment with "'//":
sum=a + b //calculating the sum
You can also add a comment to the JavaScript code, starting the comment with "/*" and ending it with "*/"
sum=a + b /*calculating the sum*/
Using "/*" and "*/" is the only way to create a multi-line comment:
/* This is a comment
block. It contains
several lines*/
Examples
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