JavaScript Guidelines
Some things to know about JavaScript.
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
symbol, like ' " ] } ).
White Space
JavaScript ignores extra spaces. You can add white space to your
script to make it more readable. These two lines mean exactly the
same:
name="Hege"
name = "Hege" |
Break up a Code Line
You can break up a code line within a text string with a
backslash. The example below will be displayed properly:
document.write("Hello \
World!") |
Note: You can not break up a code line like this:
document.write \
("Hello World!") |
The example above will cause an error.
Insert Special Characters
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 two slashes "//":
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*/ |
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