Essentials of Javascript - Cultural View

JavaScript syntax 33
Bitwise
JavaScript supports the following binary bitwise operators:
& And
| Or
^ Xor
> Shift right (sign-propagating); copies of the leftmost bit (sign bit) are shifted in from the
left.
>>> Shift right (zero fill)
For positive numbers, >> and >>> yield the same result.
JavaScript supports the following unary bitwise operators:
~ Not (inverts the bits)
String
= Assignment
+ Concatenation
+= Concatenate and assign
Examples
str = "ab" + "cd"; // "abcd"
str += "e"; // "abcde"
str2 = "2"+2 // "22", not "4" or 4.
Control structures
Compound statements
A pair of curly brackets { } and an enclosed sequence of statements constitute a compound statement, which can
be used wherever a statement can be used.
If ... else
if (expr)
{
}
//statements;
else if (expr2)
{
}
else
{
}
//statements;
//statements;