Difference between if-else and switch statements
The if…else and switch statements are used to execute different code blocks based on different conditions in JavaScript.
The main differences between the if…else and switch statements are :
| if…else statement | switch statement |
|---|---|
| Depending on the condition in the 'if' statement, 'if' and 'else' blocks are executed. | The user will decide which statement is to be executed. |
| It contains either logical or equality expression. | it contains a single expression which can be either a character or integer variable. |
| This statement is used to choose between two options. | This statement is used to choose among multiple options. |
| It evaluates all types of data, such as integer, floating-point, character or Boolean. | It evaluates either an integer, or character. |
| First, the condition is checked. If the condition is true then 'if' block is executed otherwise 'else' block. | It executes one case after another till the break keyword is not found, or the default statement is executed. |
| If there are multiple choices implemented through 'if-else', then the speed of the execution will be slow. | If we have multiple choices then the switch statement is the best option as the speed of the execution will be much higher than 'if-else'. |
| It is tough to edit if-else statements. | It is easy to modify the switch case. |
