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Please tell me the meaning of voteable = ( age < 18) ? , and what is the meaning of ? (question mark) here ????????

<!DOCTYPE html> <html> <body> <p>Input your age and click the button:</p> <input id="age" value="18" /> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var age, voteable; age = document.getElementById("age").value; voteable = (age < 18) ? "Too young":"Old enough"; document.getElementById("demo").innerHTML = voteable + " to vote."; } </script> </body> </html>

javascript

28th Nov 2017, 4:38 PM

Karan Rajput

6 Réponses

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thanks buddy, please,can u explain the meaning of ? (question mark) here.

28th Nov 2017, 5:38 PM

Karan Rajput

+ 1

no problem , brother

28th Nov 2017, 5:45 PM

Karan Rajput

The ?: is the ternary operator, https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Conditional_Operator Before the ? goes the condition, if true then whatever is before the : is used, if false then whatever is after the : is used. It is similar to an if else but this is a 1 liner... usually.

28th Nov 2017, 5:03 PM

Dennis