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, followed by the condition to evaluate between open and close parentheses. To write an if statement, we use the keyword if If the condition does prove true, it will execute the code defined inside its code block. We control the flow of our program with the following statements, in combination with relational (comparison) and logical operators.Īn if statement will evaluate if a condition is true. This is an oversimplified example and the actual code won’t look like this, but it demonstrates how we can control the flow of the application through the use of conditional logic. If the password is the same as the db_password If username is the same as the db_username and Otherwise, they will be given the option to try try again or reset their password, if they have forgotten it.īased on this, we can imagine that the logic of our code would like something like this: If a user provides the correct credentials, they’re allowed into the member area.
![javascript conditional statement javascript conditional statement](https://notesformsc.org/wp-content/uploads/2017/09/Figure2-cond.png)
A user needs to provide login credentials before gaining access to the member part of the application. Based on the results, Javascript will execute sections of code.Īs an example, let’s consider an application with a dedicated area for its members. Javascript allows us to control the flow of our program through expressions that evaluate certain conditions.
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Multiple conditions inside a single if statement.What are conditional control statements.We also cover how to evaluate multiple conditions inside a single conditional statement, and how to nest conditionals inside each other. We cover the if statement, the else if ladder and the else catch all fallback, as well as the shorthand ternary operator ( ? : ).
![javascript conditional statement javascript conditional statement](https://image.slidesharecdn.com/javascriptconditionalstatements2-130130212557-phpapp01/95/javascript-conditional-statements-2-1-638.jpg)
In this Javascript tutorial we learn how to use if, else if and else statements to control the flow of our applications conditionally. If, else if, else Javascript if, else if, else (conditional control) Tutorial
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