ECMAScript Assignment Operators

Assignment Operators

Simple Assignment (=)

[1]The production AssignmentExpression : LeftHandSideExpression = AssignmentExpression is evaluated as follows:

• get value of left hand side expression;
• get value of right hand side expression;
• if no exception, assigning result to left hand side expression

Compound Assignment (operator=)

[1]Compound Assignment[1] (operator=) is one of the following:

$$*= /= \%= += -= <<= >>= >>>= &= ^= |=$$
The production of “LeftHandSideExpression CompoundAssignmentOperator AssignmentExpression” is evaluated as follows:

• get value of left hand side expression;
• get value of right hand side expression;
• applying operator to left hand side value and right hand side value;
• if no exception, assigning result to left hand side expression

[1] ECMA-262 5.1 http://www.ecma-international.org/ecma-262/5.1/

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