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Examples:

JavaScript supports the following unary bitwise operator:

JavaScript supports the following binary assignment operators:

| &= | and |

|---|---|

| /= | or |

| ^= | xor |

| <<= | shift left (zero fill at right) |

| >>= | shift right (sign-propagating); copies… |

| >>>= | shift right (zero fill at left). For po… |

Examples:

| = | assignment |

|---|---|

| + | concatenation |

| += | concatenate and assign |

Examples:

JavaScript's nearest operator is ??, the "nullish coalescing operator",

which was added to the standard in ECMAScript's 11th edition.cite-ref-18[18] In

earlier versions, it could be used via a Babel plugin, and in

TypeScript. It evaluates its left-hand operand and, if the result value

is not "nullish" (null or undefined), takes that value as its result;

otherwise, it evaluates the right-hand operand and takes the resulting

value as its result.

In the following example, a will be assigned the value of b if the value

of b is not null or undefined, otherwise it will be assigned 3.

Before the nullish coalescing operator, programmers would use the

logical OR operator (||). But where ?? looks specifically for null or

undefined, the || operator looks for any falsy value: null, undefined,

"", 0, NaN, and of course, false.

In the following example, a will be assigned the value of b if the value

of b is truthy, otherwise it will be assigned 3.

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