One Pager Cheat Sheet

• We will learn about controlling the behavior of a program using if/else and try/catch statements to establish its control flow.
• The control flow of a program is the order of execution of code elements, taking different decisions based on if/else and try/catch statements to handle errors and exceptions.
• If/Else Statements provide a way to control program execution, by defining different flows depending on the conditions, such as in the form of a flow chart diagram.
• Using the if and else keywords, JavaScript allows for conditions to be evaluated with the syntax if (expression) { statement; }, enabling developers to create a scope within the curly braces for the statement to be evaluated against the given expression.
• We can use the if-else if-else structure to determine a number's value in JavaScript using multiple if statements.
• An if condition is essential for else if and else statements to work, but it is possible to have an if condition that stands alone.
• There is no limit to the number of statements that can be included under an if block.
• The code needs a boolean expression enclosed in round brackets ( ) in the if block in order to be evaluated by the compiler.
• Using try/catch statements allow the programmer to handle errors that occur during the execution of the program.
• Using the try and catch keywords, a JavaScript program can handle errors by running the statements in the catch block, preventing the program from halting.
• No, we cannot have a catch block without a try block because it is a syntax structure in JavaScript that requires both.
• The try block will attempt to execute the return statement, producing the output of 1 and the catch block will never be used as there was no error to handle.
• We can control the flow of execution in a program and adapt to uncertain conditions using if/else and try/catch statements, which is necessary for many complex applications such as in artificial intelligence.