Assignment Operators

Assignment operators enable modification of variables.

• Assignment Expression

  Assign a value to a variable.

• Bitwise AND Assignment (&=) Expression

  Apply a logical AND to the value of a variable.

• Bitwise Left Shift Assignment (<<=) Expression

  Shift bits to the left by the specified amount and assign the value back to a variable.

• Bitwise OR Assignment (|=) Expression

  Apply logical inclusive OR to the value of a variable.

• Bitwise Right Shift Assignment (>>=) Expression

  Perform a sign-propagating right shift by the specified amount and assign the value back to a variable.

• Bitwise Unsigned Right Shift Assignment (>>>=) Expression

  Perform a zero-fill right shift by the specified amount and assign the value back to a variable.

• Bitwise XOR Assignment (^=) Expression

  Apply logical exclusive OR to the value of a variable.

• Concatenation Assignment (+=) Expression

  Appends a string value to an existing variable, property, or array element.

• Decremental Assignment (-=) Expression

  Decrement the value of a variable.

• Division Assignment (/=) Expression

  Divide the value of a variable.

• Incremental Assignment (+=) Expression

  Increment the value of a variable.

• Modulus Assignment (%=) Expression

  Assigns the remainder of a division operation to a variable.

• Multiplicative Assignment (*=) Expression

  Multiply the value of a variable.

• Safe Assignment (?=) Expression

  Assigns the first non-null, non-undefined value to a variable.

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