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4.7.3 Lvalues

4.7.3 Lvalues


Notice that the assignment operators and a few of the other operators listed in Table 4-1 expect an operand of type lval. lvalue is a historical term that means “an expression that can legally appear on the left side of an assignment expression.” In JavaScript, variables, properties of objects, and elements of arrays are lvalues. The ECMAScript specification allows built-in functions to return lvalues but does not define any functions that behave that way.

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