Ternary operator in Javascript

Learn about how and when to use ternary operator in Javascript

Ternary operator in Javascript

Ternary operator is also denoted as conditional operator.

Ternary operator is the compact version of if statement.

If you’re going to check for simple condition, then ternary operator is highly recommended instead of if block.

Example of using normal if condition

function printName(name, inUpperCase) {

    if(inUpperCase) {

      name = name.toUpperCase();

    } else {

      name = name.toLowerCase();

    }

    console.log(name); 

  }

The above code can be simplified into

function printName(name, inUpper) {

    name=(inUpper===true) ? name.toUpperCase() : name.toLowerCase();

    console.log(name); 

  }

There are three parts in ternary operator

Condition part → Condition to check

true part → executed if the condition is true

false part → executed if the condition is evaluated to false

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