How to write not equal to x or y in js

In JavaScript, you can use the || operator to check whether a value is not equal to x or y: if (value != x || value != y).

means not equal to x or y in JavaScript

Question: How to use JavaScript means that a value is not equal to x or y?

Answer: You can use the || (logical OR) operator to check whether a value is not equal to any of multiple values.

Example:

<code class="javascript">if (value != x || value != y) {
  // 代码块执行，因为 value 不等于 x 或 y
}</code>

Detailed description:

|| The operator will return the following two The first true value among the operands, otherwise the last operand is returned. In this case, we are checking if value is not equal to x or y. If value is not equal to x, the expression evaluates to true and the code block is executed. If value is equal to x, the expression continues by checking whether value is not equal to y. If value is not equal to y, the expression evaluates to true and the code block is executed. Only if value is equal to both x and y, the expression evaluates to false and the code block is not executed.

Alternatives:

In addition to using the || operator, you can also use the following alternatives:

• Use ! (logical NOT) operator: if (!(value === x || value === y))
• Use XOR (logical exclusive OR) operator: if (value !== x ^ value !== y)

However, ||# The ## operator is the simplest and most concise way to express multiple values ​​that are not equal to each other.

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