As with any programming decision, be sure to consider context and usability before using a ternary operator. This is where ternary makes the code clean and easy to read.
The ternary operator shortens this if/else statement into a single statement: This is how I would write the code for the JSX :-I hope you did learn a few tips and tricks regarding the ternary operator in this article and you do apply them in your coding. In JavaScript we have the following conditional statements: Use if to specify a block of code to be executed, if a specified condition is true; Use else to specify a block of code to be executed, if the same condition is false; Use else if to specify a new condition to test, if the first condition is false
The ternary operator is a substitute for an if statement in which both the if and else clauses assign different values to the same field, like so: We could use an ifstatement to accomplish this: But … The expression_1, and expression_2 are expressions of any type. An if statement is written with the if keyword, followed by a condition in parentheses, with the code to be executed in between curly brackets. In practice, I’d probably writeIn your case i see the ternary operator as redundant. First of all, a ternary expression is not a replacement for an if/else construct – its an equivalent to an if/else construct that In short – the ‘correct’ use of a ternary expression is This is still an expression and might therefore not pass validation, so an even better approach would beBut then again, if the expected value is a boolean, just use the result of the condition expression itselfNo, it needs three operands. Using a conditional, like an if statement, allows us to specify that a certain block of code should be executed if a certain condition is met.. We want to test if the age of our person is greater than or equal to 16. In short, it can be written as if () {}. If this is true, they’re old enough to drive and driver should say 'Yes'. You might have a conditional statement like this: Even if the business logic inside if-else is of one line each, we take up anywhere from 2 to 6 lines of code depending on how you write the brackets in conditionals.This is where ternary makes the code clean and easy to read. I won’t even give an example of nested ternary operators here because they are just too ugly This is just an additional section for devs who work on React or want to work on React in the future.Well, React renders content using JSX and there are many many times when we want to render content based on some condition and we add that conditional check in the JSX itself. When using a ternary operator — or any abbreviation — consider who will be reading your code. And a Google search for "ternary operator without else site:stackoverflow.com" produces as many as 62 thousand (!) They are difficult to read and comprehend and just go against the very thing ternary operator was created for – better readability.Not saying that people don’t use nested ternaries, they do – but it’s ugly and certainly not recommended. This is especially true if your condition and evaluations are complex enough that you would need to nest or chain your ternary operator. We can assume a, b and c as values. Although our grade value of 87 is technically also true for C, D and F, the statements will stop at the first one that is successful. The ternary operator also allows the inclusion of multiple operations for each expression, separated by a comma:
If you refactor and change the condition, then there is a danger that this is no longer true. b : c If a is true, b will be executed. So here's how we solve this problem in C# - let's create an extension method for bool called .Then X : Y) in C++? The conditional ternary operator in JavaScript assigns a value to a variable based on some condition and is the only JavaScript operator that takes three operands. Consider the following example: We have a person object that consists of a name, age, and driverproperty. First of all, a ternary expression is not a replacement for an if/else construct – its an equivalent to an if/else construct that returns a value. B In our example, we first check for the highest score, which will be greater than or equal to 90.After that, the else if statements will check for greater than 80, 70, and 60 until it reaches the default else of a failing grade.. The condition is an expression that evaluates to a Boolean value, either true or false. That’s why they’re called However, for what you have as your example, you can do this:Although it’s safer to have braces if you need to add more than one statement in the future:More often people get use of logical operators to shorten the statement syntax:But in your particular case the syntax can be even simplerSo that x is unmodified when the condition is false.There are a couple of alternatives – I’m not saying these are better/worse – merely alternativesPassing in null as the third parameter works because the existing value is null.