JAVASCRIPT

The Power of Javascript: Operators continued

In the last article we talked about some of the unary and binary operators available in Javascript, namely the arithmetic operators, the comparison operators and the increment/decrement operators. In this article we continue our discussion of the Javascript operators; we will discuss how computers represent data, and bitwise operators.

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By: Michael Youssef

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July 26, 2005

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We have been using the assignment operator (=) since the first article in the series. Assignment operators are binary operators that assign the value of their right operands to the variable on their left operands. The assignment operator (=) can be combined with the arithmetic operators or with the bitwise operators to offer you a way to perform an operation, then an assignment, as a shortcut statement. Let's take a look at those assignment operators.

Operator	Operator Explanation
+=	The statement x += 1 is the same as x = x + 1; It's like saying assign the value 1 to the value of x.
-=	x -= 1 is the same as x = x - 1;
*=	x = 2 is the same as x = x 2;
/=	x /= 2 is the same as x = x / 2;
%=	x %= 2 is the same as x = x % 2;
&=	x &= 2 is the same as x = x & 2;
\|=	x \|= 2 is the same as x = x \| 2;
^=	x ^= 2 is the same as x = x ^ 2;
>>=	x >>= 2 is the same as x = x >> 2;
<<=	x <<= 2 is the same as x = x << 2;