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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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