How can I use conditional expressions within a JavaScript switch statement?

Case Statement with Conditional Expressions

In JavaScript, switch statements typically compare a single value against a set of constant values. However, it is impossible to use conditional expressions directly within the case clauses.

Problem Exploration:

In the provided example, the code attempts to use an expression to determine the case, as seen in the following code snippet:

<code class="javascript">case (amount >= 7500 && amount < 10000):

This code will not work because the expression amount >= 7500 && amount < 10000 evaluates to a boolean, not a string or number like the other case values.

Solution Using a Boolean Switch:

One way to handle conditional expressions in a switch statement is to switch on a boolean value and use the expression to determine which case is executed:

<code class="javascript">switch (true) {
  case (amount >= 7500 && amount < 10000):
    // Code
    break;
  case (amount >= 10000 && amount < 15000):
    // Code
    break;
  // etc.
}

In this approach, the expression is used to evaluate the boolean condition, and the case with the matching condition is executed.

Alternative Approach Using If-Else:

It's important to note that a simple if-else statement may be a more concise and clearer alternative in this scenario, especially when dealing with multiple conditional expressions:

<code class="javascript">if (amount >= 7500 && amount < 10000) {
  // Code
} else if (amount >= 10000 && amount < 15000) {
  // Code
} else {
  // Code
}</code>

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