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Learn how to use the optional chaining (?.) operator to access an object's property or call a function without throwing an error if the reference is nullish. See syntax, examples, and limitations of this feature.
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BetaLearn about the three main uses of the ? operator in JavaScript: ternary operator, optional chaining, and nullish coalescing. See examples, comparisons, and benefits of this powerful feature.
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BetaThe conditional (ternary) operator is the only JavaScript operator that takes three operands. This operator is frequently used as a shortcut for the if statement. condition ? expr1 : expr2 If condition is true, the operator returns the value of expr1; otherwise, it returns the value of expr2.
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BetaThe question mark and colon operators together are the ternary operator. How to Correctly Use the JavaScript Question Mark Operator . Question marks are useful in JavaScript for quickly assigning a different value to a variable based on a condition, a very common task:
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BetaLearn three different meanings and uses of the question mark (?) operator in JavaScript: ternary, null coalescing, and optional chaining. See syntax, examples, and contrast with other operators.
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BetaLearn how to use the if statement and the conditional operator ? to perform different actions based on different conditions in JavaScript. See examples, syntax, and comparison with if..else.
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BetaLearn how to use the ? operator for ternary, optional chaining, nullish coalescing and combined operations in JavaScript. Compare the ? operator to alternatives like if/else statements and see examples and benchmarks.
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BetaThe Ternary Operator: Code More Efficiently. JavaScript’s question mark is commonly used in the ternary operator, which is an abbreviated version of an if-else statement. This operator can save you time and lines of code. Let’s take a look at how it works: condition ? value1 : value2 Code language: JavaScript (javascript)
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BetaIn JavaScript, the ?. or “question mark dot” operator might have caught your attention. This operator is known as the optional chaining operator and was introduced into JS and TS with ...
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BetaThe conditional (ternary) operator is the only JavaScript operator that takes three operands: a condition followed by a question mark (?), then an expression to execute if the condition is truthy followed by a colon (:), and finally the expression to execute if the condition is falsy. This operator is frequently used as an alternative to an if...else statement.
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