Decision-making structures require that the programmer specifies one or more conditions to be evaluated or tested by the program, along with a statement or statements to be executed if the condition is determined to be true, and optionally, other statements to be executed if the condition is determined to be false.
Shown below is the general form of a typical decision-making structure found in most of the programming languages â
A decision-making construct evaluates a condition before the instructions are executed. Decision-making constructs in TypeScript are classified as follows â
| S.No. | Statement & Description |
|---|---|
| 1. | if statement An âifâ statement consists of a Boolean expression followed by one or more statements. |
| 2. | if…else statement An âifâ statement can be followed by an optional âelseâ statement, which executes when the Boolean expression is false. |
| 3. | elseâŠif and nested if statements You can use one âifâ or âelse ifâ statement inside another âifâ or âelse ifâ statement(s). |
| 4. | switch statement A âswitchâ statement allows a variable to be tested against a list of values. |
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