Assignment Operators in JavaScript
JavaScript supports the following assignment operators −
1. = (Simple Assignment )
Assigns values from the right side operand to the left side operand
Ex: C = A + B will assign the value of A + B into C
2. += (Add and Assignment)
It adds the right operand to the left operand and assigns the result to the left operand.
Ex: C += A is equivalent to C = C + A
3. −= (Subtract and Assignment)
It subtracts the right operand from the left operand and assigns the result to the left operand.
Ex: C -= A is equivalent to C = C - A
4. *= (Multiply and Assignment)
It multiplies the right operand with the left operand and assigns the result to the left operand.
Ex: C *= A is equivalent to C = C * A
5. /= (Divide and Assignment)
It divides the left operand with the right operand and assigns the result to the left operand.
Ex: C /= A is equivalent to C = C / A
6. %= (Modules and Assignment)
It takes modulus using two operands and assigns the result to the left operand.
Ex: C %= A is equivalent to C = C % A
Example
<html>
<body>
<h1>Assignment Operators</h1><br/>
<script type="text/javascript">
var a = 33;
var b = 10;
var linebreak = "<br />";
document.write("Value of a => (a = b) => ");
result = (a = b);
document.write(result);
document.write(linebreak);
document.write("Value of a => (a += b) => ");
result = (a += b);
document.write(result);
document.write(linebreak);
document.write("Value of a => (a -= b) => ");
result = (a -= b);
document.write(result);
document.write(linebreak);
document.write("Value of a => (a *= b) => ");
result = (a *= b);
document.write(result);
document.write(linebreak);
document.write("Value of a => (a /= b) => ");
result = (a /= b);
document.write(result);
document.write(linebreak);
document.write("Value of a => (a %= b) => ");
result = (a %= b);
document.write(result);
document.write(linebreak);
</script>
<p>Set the variables to different values and different operators and then try...</p>
</body>
</html>
Output
Value of a => (a = b) => 10
Value of a => (a += b) => 20
Value of a => (a -= b) => 10
Value of a => (a *= b) => 100
Value of a => (a /= b) => 10
Value of a => (a %= b) => 0
Set the variables to different values and different operators and then try...
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