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Is this valid?
switch(foo) { case 'bar': if(raz == 'something') { // execute } else { // do something else } break; ... default: // yada yada } 
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An if-then-else statement can test expressions based on ranges of values or conditions, whereas a switch statement tests expressions based only on a single integer, enumerated value, or String object. Technically, the final break is not required because flow falls out of the switch statement.
The if/else statement executes a block of code if a specified condition is true. If the condition is false, another block of code can be executed. The if/else statement is a part of JavaScript's "Conditional" Statements, which are used to perform different actions based on different conditions.
The JavaScript switch case is a multiple if else statement. It takes a conditional expression just like an if statement but can have many conditions—or cases—that can match the result of the expression to run different blocks of code.
A switch statement works much faster than an equivalent if-else ladder. It's because the compiler generates a jump table for a switch during compilation. As a result, during execution, instead of checking which case is satisfied, it only decides which case has to be executed.
Yes, it is perfectly valid. Have you tried it?
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You can combine a switch and an if in a better way, if you really have to:
switch (true) { case (foo === 'bar' && raz === 'something'): // execute break; case (foo === 'bar'): // do something else break; default: // yada yada } Sorry to revive such an old post, but it may help people who came here looking how to combine or nest a switch and an if statement.
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