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Learn 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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BetaLearn 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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BetaIf you see any more funny symbols in JavaScript, you should try looking up JavaScript's operators first: Mozilla Developer Center's list of operators. The one exception you're likely to encounter is the $ symbol. To answer your question, conditional operators replace simple if statements. An example is best:
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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 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 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 ? 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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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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BetaThe question mark in JavaScript. Simple example code. Ternary Operator. It 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. Read more: Ternary Operator
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